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Finding the Fourth Proportional to 458,087.16, 632,158.38 and 279,239.16

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Solution

The fourth proportional to 458,087.16, 632,158.38 and 279,239.16 is: 385,348.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,087.16 : 632,158.38 = 279,239.16 : x
  2. Step 2: Convert to fraction form
    458,087.16/632,158.38 = 279,239.16/x
  3. Step 3: Cross multiply
    458,087.16x = 632,158.38 × 279,239.16
  4. Step 4: Simplify right side
    458,087.16x = 176,523,375,018.16
  5. Step 5: Solve for x
    x = 176,523,375,018.16/458,087.16
  6. Step 6: Final answer
    x = 385,348.88

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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.