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Finding the Fourth Proportional to 269,123.90, 403,187.70 and 156,857.90

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Solution

The fourth proportional to 269,123.90, 403,187.70 and 156,857.90 is: 234,996.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,123.90 : 403,187.70 = 156,857.90 : x
  2. Step 2: Convert to fraction form
    269,123.90/403,187.70 = 156,857.90/x
  3. Step 3: Cross multiply
    269,123.90x = 403,187.70 × 156,857.90
  4. Step 4: Simplify right side
    269,123.90x = 63,243,175,927.83
  5. Step 5: Solve for x
    x = 63,243,175,927.83/269,123.90
  6. Step 6: Final answer
    x = 234,996.51

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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.