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Finding the Fourth Proportional to 385,672.76, 577,512.30 and 266,098.40

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Solution

The fourth proportional to 385,672.76, 577,512.30 and 266,098.40 is: 398,459.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,672.76 : 577,512.30 = 266,098.40 : x
  2. Step 2: Convert to fraction form
    385,672.76/577,512.30 = 266,098.40/x
  3. Step 3: Cross multiply
    385,672.76x = 577,512.30 × 266,098.40
  4. Step 4: Simplify right side
    385,672.76x = 153,675,099,010.32
  5. Step 5: Solve for x
    x = 153,675,099,010.32/385,672.76
  6. Step 6: Final answer
    x = 398,459.82

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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.