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Finding the Fourth Proportional to 457,419.40, 631,239.06 and 250,686.88

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Solution

The fourth proportional to 457,419.40, 631,239.06 and 250,686.88 is: 345,948.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,419.40 : 631,239.06 = 250,686.88 : x
  2. Step 2: Convert to fraction form
    457,419.40/631,239.06 = 250,686.88/x
  3. Step 3: Cross multiply
    457,419.40x = 631,239.06 × 250,686.88
  4. Step 4: Simplify right side
    457,419.40x = 158,243,350,485.53
  5. Step 5: Solve for x
    x = 158,243,350,485.53/457,419.40
  6. Step 6: Final answer
    x = 345,948.05

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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.