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Finding the Fourth Proportional to 372,048.72, 513,680.79 and 249,724.56

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Solution

The fourth proportional to 372,048.72, 513,680.79 and 249,724.56 is: 344,790.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,048.72 : 513,680.79 = 249,724.56 : x
  2. Step 2: Convert to fraction form
    372,048.72/513,680.79 = 249,724.56/x
  3. Step 3: Cross multiply
    372,048.72x = 513,680.79 × 249,724.56
  4. Step 4: Simplify right side
    372,048.72x = 128,278,712,125.97
  5. Step 5: Solve for x
    x = 128,278,712,125.97/372,048.72
  6. Step 6: Final answer
    x = 344,790.09

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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.