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Finding the Fourth Proportional to 243,157.79, 363,989.32 and 207,285.52

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Solution

The fourth proportional to 243,157.79, 363,989.32 and 207,285.52 is: 310,291.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,157.79 : 363,989.32 = 207,285.52 : x
  2. Step 2: Convert to fraction form
    243,157.79/363,989.32 = 207,285.52/x
  3. Step 3: Cross multiply
    243,157.79x = 363,989.32 × 207,285.52
  4. Step 4: Simplify right side
    243,157.79x = 75,449,715,470.65
  5. Step 5: Solve for x
    x = 75,449,715,470.65/243,157.79
  6. Step 6: Final answer
    x = 310,291.17

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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.