Home / 387,172,833,929.70-534,300,171,913.14-211,193,134,892.16

Finding the Fourth Proportional to 387,172,833,929.70, 534,300,171,913.14 and 211,193,134,892.16

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Solution

The fourth proportional to 387,172,833,929.70, 534,300,171,913.14 and 211,193,134,892.16 is: 291,447,432,234.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,172,833,929.70 : 534,300,171,913.14 = 211,193,134,892.16 : x
  2. Step 2: Convert to fraction form
    387,172,833,929.70/534,300,171,913.14 = 211,193,134,892.16/x
  3. Step 3: Cross multiply
    387,172,833,929.70x = 534,300,171,913.14 × 211,193,134,892.16
  4. Step 4: Simplify right side
    387,172,833,929.70x = 112,840,528,279,756,058,132,480
  5. Step 5: Solve for x
    x = 112,840,528,279,756,058,132,480/387,172,833,929.70
  6. Step 6: Final answer
    x = 291,447,432,234.48

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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.