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Finding the Fourth Proportional to 572,206.74, 858,310.11 and 305,158.20

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Solution

The fourth proportional to 572,206.74, 858,310.11 and 305,158.20 is: 457,737.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,206.74 : 858,310.11 = 305,158.20 : x
  2. Step 2: Convert to fraction form
    572,206.74/858,310.11 = 305,158.20/x
  3. Step 3: Cross multiply
    572,206.74x = 858,310.11 × 305,158.20
  4. Step 4: Simplify right side
    572,206.74x = 261,920,368,209.40
  5. Step 5: Solve for x
    x = 261,920,368,209.40/572,206.74
  6. Step 6: Final answer
    x = 457,737.30

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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.