Home / 858,014.70-1,287,022.05-218,317.20

Finding the Fourth Proportional to 858,014.70, 1,287,022.05 and 218,317.20

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Solution

The fourth proportional to 858,014.70, 1,287,022.05 and 218,317.20 is: 327,475.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,014.70 : 1,287,022.05 = 218,317.20 : x
  2. Step 2: Convert to fraction form
    858,014.70/1,287,022.05 = 218,317.20/x
  3. Step 3: Cross multiply
    858,014.70x = 1,287,022.05 × 218,317.20
  4. Step 4: Simplify right side
    858,014.70x = 280,979,050,294.26
  5. Step 5: Solve for x
    x = 280,979,050,294.26/858,014.70
  6. Step 6: Final answer
    x = 327,475.80

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Similar ratio
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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.