Home / 387,935,816.40-581,987,705.40-115,334,139.60

Finding the Fourth Proportional to 387,935,816.40, 581,987,705.40 and 115,334,139.60

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Solution

The fourth proportional to 387,935,816.40, 581,987,705.40 and 115,334,139.60 is: 173,026,177.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,935,816.40 : 581,987,705.40 = 115,334,139.60 : x
  2. Step 2: Convert to fraction form
    387,935,816.40/581,987,705.40 = 115,334,139.60/x
  3. Step 3: Cross multiply
    387,935,816.40x = 581,987,705.40 × 115,334,139.60
  4. Step 4: Simplify right side
    387,935,816.40x = 67,123,051,260,087,264
  5. Step 5: Solve for x
    x = 67,123,051,260,087,264/387,935,816.40
  6. Step 6: Final answer
    x = 173,026,177.07

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.