Home / 387,935,820.90-581,987,712.15-115,334,144.10

Finding the Fourth Proportional to 387,935,820.90, 581,987,712.15 and 115,334,144.10

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Solution

The fourth proportional to 387,935,820.90, 581,987,712.15 and 115,334,144.10 is: 173,026,183.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,935,820.90 : 581,987,712.15 = 115,334,144.10 : x
  2. Step 2: Convert to fraction form
    387,935,820.90/581,987,712.15 = 115,334,144.10/x
  3. Step 3: Cross multiply
    387,935,820.90x = 581,987,712.15 × 115,334,144.10
  4. Step 4: Simplify right side
    387,935,820.90x = 67,123,054,657,537,416
  5. Step 5: Solve for x
    x = 67,123,054,657,537,416/387,935,820.90
  6. Step 6: Final answer
    x = 173,026,183.82

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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.