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Finding the Fourth Proportional to 218,528.20, 290,829.13 and 218,528.20

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Solution

The fourth proportional to 218,528.20, 290,829.13 and 218,528.20 is: 290,829.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,528.20 : 290,829.13 = 218,528.20 : x
  2. Step 2: Convert to fraction form
    218,528.20/290,829.13 = 218,528.20/x
  3. Step 3: Cross multiply
    218,528.20x = 290,829.13 × 218,528.20
  4. Step 4: Simplify right side
    218,528.20x = 63,554,366,286.47
  5. Step 5: Solve for x
    x = 63,554,366,286.47/218,528.20
  6. Step 6: Final answer
    x = 290,829.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.33) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.