Home / 317,686.20-438,378.39-174,443.10

Finding the Fourth Proportional to 317,686.20, 438,378.39 and 174,443.10

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Solution

The fourth proportional to 317,686.20, 438,378.39 and 174,443.10 is: 240,715.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,686.20 : 438,378.39 = 174,443.10 : x
  2. Step 2: Convert to fraction form
    317,686.20/438,378.39 = 174,443.10/x
  3. Step 3: Cross multiply
    317,686.20x = 438,378.39 × 174,443.10
  4. Step 4: Simplify right side
    317,686.20x = 76,472,085,324.61
  5. Step 5: Solve for x
    x = 76,472,085,324.61/317,686.20
  6. Step 6: Final answer
    x = 240,715.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.