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Finding the Fourth Proportional to 428,875.61, 591,833.21 and 237,906.77

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Solution

The fourth proportional to 428,875.61, 591,833.21 and 237,906.77 is: 328,302.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,875.61 : 591,833.21 = 237,906.77 : x
  2. Step 2: Convert to fraction form
    428,875.61/591,833.21 = 237,906.77/x
  3. Step 3: Cross multiply
    428,875.61x = 591,833.21 × 237,906.77
  4. Step 4: Simplify right side
    428,875.61x = 140,801,123,221.13
  5. Step 5: Solve for x
    x = 140,801,123,221.13/428,875.61
  6. Step 6: Final answer
    x = 328,302.94

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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.