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Finding the Fourth Proportional to 247,920.28, 342,116.10 and 134,742.28

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Solution

The fourth proportional to 247,920.28, 342,116.10 and 134,742.28 is: 185,936.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,920.28 : 342,116.10 = 134,742.28 : x
  2. Step 2: Convert to fraction form
    247,920.28/342,116.10 = 134,742.28/x
  3. Step 3: Cross multiply
    247,920.28x = 342,116.10 × 134,742.28
  4. Step 4: Simplify right side
    247,920.28x = 46,097,503,338.71
  5. Step 5: Solve for x
    x = 46,097,503,338.71/247,920.28
  6. Step 6: Final answer
    x = 185,936.80

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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.