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Finding the Fourth Proportional to 395,517.12, 545,663.01 and 292,398.90

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Solution

The fourth proportional to 395,517.12, 545,663.01 and 292,398.90 is: 403,399.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,517.12 : 545,663.01 = 292,398.90 : x
  2. Step 2: Convert to fraction form
    395,517.12/545,663.01 = 292,398.90/x
  3. Step 3: Cross multiply
    395,517.12x = 545,663.01 × 292,398.90
  4. Step 4: Simplify right side
    395,517.12x = 159,551,263,894.69
  5. Step 5: Solve for x
    x = 159,551,263,894.69/395,517.12
  6. Step 6: Final answer
    x = 403,399.13

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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.