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Finding the Fourth Proportional to 508,459.52, 701,672.22 and 279,020.66

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Solution

The fourth proportional to 508,459.52, 701,672.22 and 279,020.66 is: 385,047.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,459.52 : 701,672.22 = 279,020.66 : x
  2. Step 2: Convert to fraction form
    508,459.52/701,672.22 = 279,020.66/x
  3. Step 3: Cross multiply
    508,459.52x = 701,672.22 × 279,020.66
  4. Step 4: Simplify right side
    508,459.52x = 195,781,047,353.34
  5. Step 5: Solve for x
    x = 195,781,047,353.34/508,459.52
  6. Step 6: Final answer
    x = 385,047.46

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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.