Home / 387,172,833,928.82-534,300,171,911.93-211,193,134,891.29

Finding the Fourth Proportional to 387,172,833,928.82, 534,300,171,911.93 and 211,193,134,891.29

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Solution

The fourth proportional to 387,172,833,928.82, 534,300,171,911.93 and 211,193,134,891.29 is: 291,447,432,233.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,172,833,928.82 : 534,300,171,911.93 = 211,193,134,891.29 : x
  2. Step 2: Convert to fraction form
    387,172,833,928.82/534,300,171,911.93 = 211,193,134,891.29/x
  3. Step 3: Cross multiply
    387,172,833,928.82x = 534,300,171,911.93 × 211,193,134,891.29
  4. Step 4: Simplify right side
    387,172,833,928.82x = 112,840,528,279,035,678,031,872
  5. Step 5: Solve for x
    x = 112,840,528,279,035,678,031,872/387,172,833,928.82
  6. Step 6: Final answer
    x = 291,447,432,233.28

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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.