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Finding the Fourth Proportional to 301,078.60, 451,617.90 and 123,712.90

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Solution

The fourth proportional to 301,078.60, 451,617.90 and 123,712.90 is: 185,569.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    301,078.60 : 451,617.90 = 123,712.90 : x
  2. Step 2: Convert to fraction form
    301,078.60/451,617.90 = 123,712.90/x
  3. Step 3: Cross multiply
    301,078.60x = 451,617.90 × 123,712.90
  4. Step 4: Simplify right side
    301,078.60x = 55,870,960,100.91
  5. Step 5: Solve for x
    x = 55,870,960,100.91/301,078.60
  6. Step 6: Final answer
    x = 185,569.35

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Similar ratio
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1.5x scale

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.