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Finding the Fourth Proportional to 228,517.92, 315,382.95 and 137,925.90

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Solution

The fourth proportional to 228,517.92, 315,382.95 and 137,925.90 is: 190,354.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,517.92 : 315,382.95 = 137,925.90 : x
  2. Step 2: Convert to fraction form
    228,517.92/315,382.95 = 137,925.90/x
  3. Step 3: Cross multiply
    228,517.92x = 315,382.95 × 137,925.90
  4. Step 4: Simplify right side
    228,517.92x = 43,499,477,223.41
  5. Step 5: Solve for x
    x = 43,499,477,223.41/228,517.92
  6. Step 6: Final answer
    x = 190,354.77

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1.5x scale

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.