Home / 253,851.24-380,508.90-85,211.64

Finding the Fourth Proportional to 253,851.24, 380,508.90 and 85,211.64

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Solution

The fourth proportional to 253,851.24, 380,508.90 and 85,211.64 is: 127,727.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,851.24 : 380,508.90 = 85,211.64 : x
  2. Step 2: Convert to fraction form
    253,851.24/380,508.90 = 85,211.64/x
  3. Step 3: Cross multiply
    253,851.24x = 380,508.90 × 85,211.64
  4. Step 4: Simplify right side
    253,851.24x = 32,423,787,403.60
  5. Step 5: Solve for x
    x = 32,423,787,403.60/253,851.24
  6. Step 6: Final answer
    x = 127,727.51

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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.