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Finding the Fourth Proportional to 372,576.87, 513,017.49 and 280,829.48

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Solution

The fourth proportional to 372,576.87, 513,017.49 and 280,829.48 is: 386,686.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,576.87 : 513,017.49 = 280,829.48 : x
  2. Step 2: Convert to fraction form
    372,576.87/513,017.49 = 280,829.48/x
  3. Step 3: Cross multiply
    372,576.87x = 513,017.49 × 280,829.48
  4. Step 4: Simplify right side
    372,576.87x = 144,070,432,382.52
  5. Step 5: Solve for x
    x = 144,070,432,382.52/372,576.87
  6. Step 6: Final answer
    x = 386,686.46

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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.