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Finding the Fourth Proportional to 240,381.27, 360,569.07 and 100,139.90

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Solution

The fourth proportional to 240,381.27, 360,569.07 and 100,139.90 is: 150,208.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    240,381.27 : 360,569.07 = 100,139.90 : x
  2. Step 2: Convert to fraction form
    240,381.27/360,569.07 = 100,139.90/x
  3. Step 3: Cross multiply
    240,381.27x = 360,569.07 × 100,139.90
  4. Step 4: Simplify right side
    240,381.27x = 36,107,348,810.05
  5. Step 5: Solve for x
    x = 36,107,348,810.05/240,381.27
  6. Step 6: Final answer
    x = 150,208.66

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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.