Home / 658,742.40-988,156.80-185,443.20

Finding the Fourth Proportional to 658,742.40, 988,156.80 and 185,443.20

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Solution

The fourth proportional to 658,742.40, 988,156.80 and 185,443.20 is: 278,176.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,742.40 : 988,156.80 = 185,443.20 : x
  2. Step 2: Convert to fraction form
    658,742.40/988,156.80 = 185,443.20/x
  3. Step 3: Cross multiply
    658,742.40x = 988,156.80 × 185,443.20
  4. Step 4: Simplify right side
    658,742.40x = 183,246,959,093.76
  5. Step 5: Solve for x
    x = 183,246,959,093.76/658,742.40
  6. Step 6: Final answer
    x = 278,176.96

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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.