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Finding the Fourth Proportional to 654,211.20, 981,025.20 and 254,719.20

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Solution

The fourth proportional to 654,211.20, 981,025.20 and 254,719.20 is: 381,965.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,211.20 : 981,025.20 = 254,719.20 : x
  2. Step 2: Convert to fraction form
    654,211.20/981,025.20 = 254,719.20/x
  3. Step 3: Cross multiply
    654,211.20x = 981,025.20 × 254,719.20
  4. Step 4: Simplify right side
    654,211.20x = 249,885,954,123.84
  5. Step 5: Solve for x
    x = 249,885,954,123.84/654,211.20
  6. Step 6: Final answer
    x = 381,965.26

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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.