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Finding the Fourth Proportional to 290,306.90, 435,314.55 and 132,356.90

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Solution

The fourth proportional to 290,306.90, 435,314.55 and 132,356.90 is: 198,468.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,306.90 : 435,314.55 = 132,356.90 : x
  2. Step 2: Convert to fraction form
    290,306.90/435,314.55 = 132,356.90/x
  3. Step 3: Cross multiply
    290,306.90x = 435,314.55 × 132,356.90
  4. Step 4: Simplify right side
    290,306.90x = 57,616,884,362.90
  5. Step 5: Solve for x
    x = 57,616,884,362.90/290,306.90
  6. Step 6: Final answer
    x = 198,468.88

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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.