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Finding the Fourth Proportional to 373,280.40, 559,920.60 and 221,721.30

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Solution

The fourth proportional to 373,280.40, 559,920.60 and 221,721.30 is: 332,581.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,280.40 : 559,920.60 = 221,721.30 : x
  2. Step 2: Convert to fraction form
    373,280.40/559,920.60 = 221,721.30/x
  3. Step 3: Cross multiply
    373,280.40x = 559,920.60 × 221,721.30
  4. Step 4: Simplify right side
    373,280.40x = 124,146,323,328.78
  5. Step 5: Solve for x
    x = 124,146,323,328.78/373,280.40
  6. Step 6: Final answer
    x = 332,581.95

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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.