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Finding the Fourth Proportional to 325,112.95, 487,742.09 and 156,774.87

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Solution

The fourth proportional to 325,112.95, 487,742.09 and 156,774.87 is: 235,197.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,112.95 : 487,742.09 = 156,774.87 : x
  2. Step 2: Convert to fraction form
    325,112.95/487,742.09 = 156,774.87/x
  3. Step 3: Cross multiply
    325,112.95x = 487,742.09 × 156,774.87
  4. Step 4: Simplify right side
    325,112.95x = 76,465,702,753.28
  5. Step 5: Solve for x
    x = 76,465,702,753.28/325,112.95
  6. Step 6: Final answer
    x = 235,197.35

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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.