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Finding the Fourth Proportional to 653,615.43, 980,144.51 and 248,738.55

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Solution

The fourth proportional to 653,615.43, 980,144.51 and 248,738.55 is: 373,001.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    653,615.43 : 980,144.51 = 248,738.55 : x
  2. Step 2: Convert to fraction form
    653,615.43/980,144.51 = 248,738.55/x
  3. Step 3: Cross multiply
    653,615.43x = 980,144.51 × 248,738.55
  4. Step 4: Simplify right side
    653,615.43x = 243,799,722,964.17
  5. Step 5: Solve for x
    x = 243,799,722,964.17/653,615.43
  6. Step 6: Final answer
    x = 373,001.79

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.