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Finding the Fourth Proportional to 457,990.23, 687,047.73 and 158,390.40

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Solution

The fourth proportional to 457,990.23, 687,047.73 and 158,390.40 is: 237,607.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,990.23 : 687,047.73 = 158,390.40 : x
  2. Step 2: Convert to fraction form
    457,990.23/687,047.73 = 158,390.40/x
  3. Step 3: Cross multiply
    457,990.23x = 687,047.73 × 158,390.40
  4. Step 4: Simplify right side
    457,990.23x = 108,821,764,773.79
  5. Step 5: Solve for x
    x = 108,821,764,773.79/457,990.23
  6. Step 6: Final answer
    x = 237,607.18

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.