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Finding the Fourth Proportional to 317,693.80, 476,847.90 and 270,999.40

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Solution

The fourth proportional to 317,693.80, 476,847.90 and 270,999.40 is: 406,761.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,693.80 : 476,847.90 = 270,999.40 : x
  2. Step 2: Convert to fraction form
    317,693.80/476,847.90 = 270,999.40/x
  3. Step 3: Cross multiply
    317,693.80x = 476,847.90 × 270,999.40
  4. Step 4: Simplify right side
    317,693.80x = 129,225,494,791.26
  5. Step 5: Solve for x
    x = 129,225,494,791.26/317,693.80
  6. Step 6: Final answer
    x = 406,761.15

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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.