Home / 661,211.10-991,816.65-162,575.10

Finding the Fourth Proportional to 661,211.10, 991,816.65 and 162,575.10

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Solution

The fourth proportional to 661,211.10, 991,816.65 and 162,575.10 is: 243,862.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,211.10 : 991,816.65 = 162,575.10 : x
  2. Step 2: Convert to fraction form
    661,211.10/991,816.65 = 162,575.10/x
  3. Step 3: Cross multiply
    661,211.10x = 991,816.65 × 162,575.10
  4. Step 4: Simplify right side
    661,211.10x = 161,244,691,055.42
  5. Step 5: Solve for x
    x = 161,244,691,055.42/661,211.10
  6. Step 6: Final answer
    x = 243,862.65

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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.