Home / 387,172,833,984.30-534,300,171,988.45-211,193,134,946.74

Finding the Fourth Proportional to 387,172,833,984.30, 534,300,171,988.45 and 211,193,134,946.74

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Solution

The fourth proportional to 387,172,833,984.30, 534,300,171,988.45 and 211,193,134,946.74 is: 291,447,432,309.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,172,833,984.30 : 534,300,171,988.45 = 211,193,134,946.74 : x
  2. Step 2: Convert to fraction form
    387,172,833,984.30/534,300,171,988.45 = 211,193,134,946.74/x
  3. Step 3: Cross multiply
    387,172,833,984.30x = 534,300,171,988.45 × 211,193,134,946.74
  4. Step 4: Simplify right side
    387,172,833,984.30x = 112,840,528,324,823,116,414,976
  5. Step 5: Solve for x
    x = 112,840,528,324,823,116,414,976/387,172,833,984.30
  6. Step 6: Final answer
    x = 291,447,432,309.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.