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Finding the Fourth Proportional to 218,774.13, 328,161.19 and 71,030.13

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Solution

The fourth proportional to 218,774.13, 328,161.19 and 71,030.13 is: 106,545.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,774.13 : 328,161.19 = 71,030.13 : x
  2. Step 2: Convert to fraction form
    218,774.13/328,161.19 = 71,030.13/x
  3. Step 3: Cross multiply
    218,774.13x = 328,161.19 × 71,030.13
  4. Step 4: Simplify right side
    218,774.13x = 23,309,331,986.65
  5. Step 5: Solve for x
    x = 23,309,331,986.65/218,774.13
  6. Step 6: Final answer
    x = 106,545.19

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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.