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Finding the Fourth Proportional to 529,101.69, 730,165.68 and 287,388.98

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Solution

The fourth proportional to 529,101.69, 730,165.68 and 287,388.98 is: 396,599.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,101.69 : 730,165.68 = 287,388.98 : x
  2. Step 2: Convert to fraction form
    529,101.69/730,165.68 = 287,388.98/x
  3. Step 3: Cross multiply
    529,101.69x = 730,165.68 × 287,388.98
  4. Step 4: Simplify right side
    529,101.69x = 209,841,566,355.38
  5. Step 5: Solve for x
    x = 209,841,566,355.38/529,101.69
  6. Step 6: Final answer
    x = 396,599.69

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1.5x scale

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.