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Finding the Fourth Proportional to 326,874.59, 490,343.76 and 127,211.21

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Solution

The fourth proportional to 326,874.59, 490,343.76 and 127,211.21 is: 190,829.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,874.59 : 490,343.76 = 127,211.21 : x
  2. Step 2: Convert to fraction form
    326,874.59/490,343.76 = 127,211.21/x
  3. Step 3: Cross multiply
    326,874.59x = 490,343.76 × 127,211.21
  4. Step 4: Simplify right side
    326,874.59x = 62,377,223,025.55
  5. Step 5: Solve for x
    x = 62,377,223,025.55/326,874.59
  6. Step 6: Final answer
    x = 190,829.22

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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.