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Finding the Fourth Proportional to 529,269.60, 730,339.38 and 299,781.21

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Solution

The fourth proportional to 529,269.60, 730,339.38 and 299,781.21 is: 413,668.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,269.60 : 730,339.38 = 299,781.21 : x
  2. Step 2: Convert to fraction form
    529,269.60/730,339.38 = 299,781.21/x
  3. Step 3: Cross multiply
    529,269.60x = 730,339.38 × 299,781.21
  4. Step 4: Simplify right side
    529,269.60x = 218,942,023,047.05
  5. Step 5: Solve for x
    x = 218,942,023,047.05/529,269.60
  6. Step 6: Final answer
    x = 413,668.24

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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.