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Finding the Fourth Proportional to 457,432.89, 631,261.12 and 253,487.21

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Solution

The fourth proportional to 457,432.89, 631,261.12 and 253,487.21 is: 349,814.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,432.89 : 631,261.12 = 253,487.21 : x
  2. Step 2: Convert to fraction form
    457,432.89/631,261.12 = 253,487.21/x
  3. Step 3: Cross multiply
    457,432.89x = 631,261.12 × 253,487.21
  4. Step 4: Simplify right side
    457,432.89x = 160,016,621,510.00
  5. Step 5: Solve for x
    x = 160,016,621,510.00/457,432.89
  6. Step 6: Final answer
    x = 349,814.42

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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.