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Finding the Fourth Proportional to 218,862.73, 302,171.13 and 137,302.80

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Solution

The fourth proportional to 218,862.73, 302,171.13 and 137,302.80 is: 189,566.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,862.73 : 302,171.13 = 137,302.80 : x
  2. Step 2: Convert to fraction form
    218,862.73/302,171.13 = 137,302.80/x
  3. Step 3: Cross multiply
    218,862.73x = 302,171.13 × 137,302.80
  4. Step 4: Simplify right side
    218,862.73x = 41,488,942,228.16
  5. Step 5: Solve for x
    x = 41,488,942,228.16/218,862.73
  6. Step 6: Final answer
    x = 189,566.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.