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Finding the Fourth Proportional to 424,978.24, 637,318.76 and 125,379.28

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Solution

The fourth proportional to 424,978.24, 637,318.76 and 125,379.28 is: 188,025.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,978.24 : 637,318.76 = 125,379.28 : x
  2. Step 2: Convert to fraction form
    424,978.24/637,318.76 = 125,379.28/x
  3. Step 3: Cross multiply
    424,978.24x = 637,318.76 × 125,379.28
  4. Step 4: Simplify right side
    424,978.24x = 79,906,567,259.29
  5. Step 5: Solve for x
    x = 79,906,567,259.29/424,978.24
  6. Step 6: Final answer
    x = 188,025.08

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