Home / 272,586.04-408,679.46-128,442.76

Finding the Fourth Proportional to 272,586.04, 408,679.46 and 128,442.76

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Solution

The fourth proportional to 272,586.04, 408,679.46 and 128,442.76 is: 192,570.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,586.04 : 408,679.46 = 128,442.76 : x
  2. Step 2: Convert to fraction form
    272,586.04/408,679.46 = 128,442.76/x
  3. Step 3: Cross multiply
    272,586.04x = 408,679.46 × 128,442.76
  4. Step 4: Simplify right side
    272,586.04x = 52,491,917,797.71
  5. Step 5: Solve for x
    x = 52,491,917,797.71/272,586.04
  6. Step 6: Final answer
    x = 192,570.09

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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.