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Finding the Fourth Proportional to 428,362.32, 591,125.13 and 237,393.48

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Solution

The fourth proportional to 428,362.32, 591,125.13 and 237,393.48 is: 327,594.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,362.32 : 591,125.13 = 237,393.48 : x
  2. Step 2: Convert to fraction form
    428,362.32/591,125.13 = 237,393.48/x
  3. Step 3: Cross multiply
    428,362.32x = 591,125.13 × 237,393.48
  4. Step 4: Simplify right side
    428,362.32x = 140,329,251,726.15
  5. Step 5: Solve for x
    x = 140,329,251,726.15/428,362.32
  6. Step 6: Final answer
    x = 327,594.76

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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.