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Finding the Fourth Proportional to 458,672.27, 688,015.57 and 138,827.62

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Solution

The fourth proportional to 458,672.27, 688,015.57 and 138,827.62 is: 208,243.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,672.27 : 688,015.57 = 138,827.62 : x
  2. Step 2: Convert to fraction form
    458,672.27/688,015.57 = 138,827.62/x
  3. Step 3: Cross multiply
    458,672.27x = 688,015.57 × 138,827.62
  4. Step 4: Simplify right side
    458,672.27x = 95,515,564,879.30
  5. Step 5: Solve for x
    x = 95,515,564,879.30/458,672.27
  6. Step 6: Final answer
    x = 208,243.60

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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.