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Finding the Fourth Proportional to 274,638.60, 411,957.90 and 156,673.80

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Solution

The fourth proportional to 274,638.60, 411,957.90 and 156,673.80 is: 235,010.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,638.60 : 411,957.90 = 156,673.80 : x
  2. Step 2: Convert to fraction form
    274,638.60/411,957.90 = 156,673.80/x
  3. Step 3: Cross multiply
    274,638.60x = 411,957.90 × 156,673.80
  4. Step 4: Simplify right side
    274,638.60x = 64,543,009,633.02
  5. Step 5: Solve for x
    x = 64,543,009,633.02/274,638.60
  6. Step 6: Final answer
    x = 235,010.70

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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.