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Finding the Fourth Proportional to 518,391.95, 777,471.28 and 185,967.95

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Solution

The fourth proportional to 518,391.95, 777,471.28 and 185,967.95 is: 278,910.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,391.95 : 777,471.28 = 185,967.95 : x
  2. Step 2: Convert to fraction form
    518,391.95/777,471.28 = 185,967.95/x
  3. Step 3: Cross multiply
    518,391.95x = 777,471.28 × 185,967.95
  4. Step 4: Simplify right side
    518,391.95x = 144,584,735,773.20
  5. Step 5: Solve for x
    x = 144,584,735,773.20/518,391.95
  6. Step 6: Final answer
    x = 278,910.07

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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.