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Finding the Fourth Proportional to 354,719.70, 532,079.55 and 221,750.10

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Solution

The fourth proportional to 354,719.70, 532,079.55 and 221,750.10 is: 332,625.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,719.70 : 532,079.55 = 221,750.10 : x
  2. Step 2: Convert to fraction form
    354,719.70/532,079.55 = 221,750.10/x
  3. Step 3: Cross multiply
    354,719.70x = 532,079.55 × 221,750.10
  4. Step 4: Simplify right side
    354,719.70x = 117,988,693,420.46
  5. Step 5: Solve for x
    x = 117,988,693,420.46/354,719.70
  6. Step 6: Final answer
    x = 332,625.15

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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.