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Finding the Fourth Proportional to 372,031.78, 513,407.46 and 202,269.52

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Solution

The fourth proportional to 372,031.78, 513,407.46 and 202,269.52 is: 279,133.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,031.78 : 513,407.46 = 202,269.52 : x
  2. Step 2: Convert to fraction form
    372,031.78/513,407.46 = 202,269.52/x
  3. Step 3: Cross multiply
    372,031.78x = 513,407.46 × 202,269.52
  4. Step 4: Simplify right side
    372,031.78x = 103,846,680,498.62
  5. Step 5: Solve for x
    x = 103,846,680,498.62/372,031.78
  6. Step 6: Final answer
    x = 279,133.90

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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.