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Finding the Fourth Proportional to 372,307.92, 513,782.48 and 202,542.72

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Solution

The fourth proportional to 372,307.92, 513,782.48 and 202,542.72 is: 279,507.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,307.92 : 513,782.48 = 202,542.72 : x
  2. Step 2: Convert to fraction form
    372,307.92/513,782.48 = 202,542.72/x
  3. Step 3: Cross multiply
    372,307.92x = 513,782.48 × 202,542.72
  4. Step 4: Simplify right side
    372,307.92x = 104,062,900,987.55
  5. Step 5: Solve for x
    x = 104,062,900,987.55/372,307.92
  6. Step 6: Final answer
    x = 279,507.62

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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.