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Finding the Fourth Proportional to 572,520.88, 858,781.32 and 217,450.90

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Solution

The fourth proportional to 572,520.88, 858,781.32 and 217,450.90 is: 326,176.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,520.88 : 858,781.32 = 217,450.90 : x
  2. Step 2: Convert to fraction form
    572,520.88/858,781.32 = 217,450.90/x
  3. Step 3: Cross multiply
    572,520.88x = 858,781.32 × 217,450.90
  4. Step 4: Simplify right side
    572,520.88x = 186,742,770,937.19
  5. Step 5: Solve for x
    x = 186,742,770,937.19/572,520.88
  6. Step 6: Final answer
    x = 326,176.35

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Double scale
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Similar ratio
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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.