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Finding the Fourth Proportional to 239,470.16, 330,516.70 and 137,565.50

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Solution

The fourth proportional to 239,470.16, 330,516.70 and 137,565.50 is: 189,867.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,470.16 : 330,516.70 = 137,565.50 : x
  2. Step 2: Convert to fraction form
    239,470.16/330,516.70 = 137,565.50/x
  3. Step 3: Cross multiply
    239,470.16x = 330,516.70 × 137,565.50
  4. Step 4: Simplify right side
    239,470.16x = 45,467,693,097.35
  5. Step 5: Solve for x
    x = 45,467,693,097.35/239,470.16
  6. Step 6: Final answer
    x = 189,867.89

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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.