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Finding the Fourth Proportional to 371,789.72, 513,068.84 and 202,023.86

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Solution

The fourth proportional to 371,789.72, 513,068.84 and 202,023.86 is: 278,792.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,789.72 : 513,068.84 = 202,023.86 : x
  2. Step 2: Convert to fraction form
    371,789.72/513,068.84 = 202,023.86/x
  3. Step 3: Cross multiply
    371,789.72x = 513,068.84 × 202,023.86
  4. Step 4: Simplify right side
    371,789.72x = 103,652,147,502.52
  5. Step 5: Solve for x
    x = 103,652,147,502.52/371,789.72
  6. Step 6: Final answer
    x = 278,792.40

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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.