Home / 874,200.96-1,311,302.88-243,115.20

Finding the Fourth Proportional to 874,200.96, 1,311,302.88 and 243,115.20

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Solution

The fourth proportional to 874,200.96, 1,311,302.88 and 243,115.20 is: 364,673.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    874,200.96 : 1,311,302.88 = 243,115.20 : x
  2. Step 2: Convert to fraction form
    874,200.96/1,311,302.88 = 243,115.20/x
  3. Step 3: Cross multiply
    874,200.96x = 1,311,302.88 × 243,115.20
  4. Step 4: Simplify right side
    874,200.96x = 318,797,661,931.78
  5. Step 5: Solve for x
    x = 318,797,661,931.78/874,200.96
  6. Step 6: Final answer
    x = 364,673.20

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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.