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Finding the Fourth Proportional to 393,472.18, 542,903.46 and 232,240.77

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Solution

The fourth proportional to 393,472.18, 542,903.46 and 232,240.77 is: 320,440.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,472.18 : 542,903.46 = 232,240.77 : x
  2. Step 2: Convert to fraction form
    393,472.18/542,903.46 = 232,240.77/x
  3. Step 3: Cross multiply
    393,472.18x = 542,903.46 × 232,240.77
  4. Step 4: Simplify right side
    393,472.18x = 126,084,318,021.52
  5. Step 5: Solve for x
    x = 126,084,318,021.52/393,472.18
  6. Step 6: Final answer
    x = 320,440.23

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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.