Home / 258,466,079.52-387,702,475.92-85,942,885.68

Finding the Fourth Proportional to 258,466,079.52, 387,702,475.92 and 85,942,885.68

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Solution

The fourth proportional to 258,466,079.52, 387,702,475.92 and 85,942,885.68 is: 128,915,444.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,466,079.52 : 387,702,475.92 = 85,942,885.68 : x
  2. Step 2: Convert to fraction form
    258,466,079.52/387,702,475.92 = 85,942,885.68/x
  3. Step 3: Cross multiply
    258,466,079.52x = 387,702,475.92 × 85,942,885.68
  4. Step 4: Simplify right side
    258,466,079.52x = 33,320,269,565,845,516
  5. Step 5: Solve for x
    x = 33,320,269,565,845,516/258,466,079.52
  6. Step 6: Final answer
    x = 128,915,444.64

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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.