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Finding the Fourth Proportional to 658,748.40, 988,165.80 and 185,449.20

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Solution

The fourth proportional to 658,748.40, 988,165.80 and 185,449.20 is: 278,185.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,748.40 : 988,165.80 = 185,449.20 : x
  2. Step 2: Convert to fraction form
    658,748.40/988,165.80 = 185,449.20/x
  3. Step 3: Cross multiply
    658,748.40x = 988,165.80 × 185,449.20
  4. Step 4: Simplify right side
    658,748.40x = 183,254,557,077.36
  5. Step 5: Solve for x
    x = 183,254,557,077.36/658,748.40
  6. Step 6: Final answer
    x = 278,185.96

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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.