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Finding the Fourth Proportional to 384,702.72, 531,037.92 and 344,345.28

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Solution

The fourth proportional to 384,702.72, 531,037.92 and 344,345.28 is: 475,329.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,702.72 : 531,037.92 = 344,345.28 : x
  2. Step 2: Convert to fraction form
    384,702.72/531,037.92 = 344,345.28/x
  3. Step 3: Cross multiply
    384,702.72x = 531,037.92 × 344,345.28
  4. Step 4: Simplify right side
    384,702.72x = 182,860,401,253.02
  5. Step 5: Solve for x
    x = 182,860,401,253.02/384,702.72
  6. Step 6: Final answer
    x = 475,329.11

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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.