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Finding the Fourth Proportional to 457,680.78, 631,540.98 and 253,729.80

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Solution

The fourth proportional to 457,680.78, 631,540.98 and 253,729.80 is: 350,114.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,680.78 : 631,540.98 = 253,729.80 : x
  2. Step 2: Convert to fraction form
    457,680.78/631,540.98 = 253,729.80/x
  3. Step 3: Cross multiply
    457,680.78x = 631,540.98 × 253,729.80
  4. Step 4: Simplify right side
    457,680.78x = 160,240,766,547.20
  5. Step 5: Solve for x
    x = 160,240,766,547.20/457,680.78
  6. Step 6: Final answer
    x = 350,114.69

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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.