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Finding the Fourth Proportional to 329,311.61, 454,283.55 and 220,420.58

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Solution

The fourth proportional to 329,311.61, 454,283.55 and 220,420.58 is: 304,068.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,311.61 : 454,283.55 = 220,420.58 : x
  2. Step 2: Convert to fraction form
    329,311.61/454,283.55 = 220,420.58/x
  3. Step 3: Cross multiply
    329,311.61x = 454,283.55 × 220,420.58
  4. Step 4: Simplify right side
    329,311.61x = 100,133,442,135.67
  5. Step 5: Solve for x
    x = 100,133,442,135.67/329,311.61
  6. Step 6: Final answer
    x = 304,068.97

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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.