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Finding the Fourth Proportional to 356,210.32, 491,063.70 and 220,167.38

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Solution

The fourth proportional to 356,210.32, 491,063.70 and 220,167.38 is: 303,517.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,210.32 : 491,063.70 = 220,167.38 : x
  2. Step 2: Convert to fraction form
    356,210.32/491,063.70 = 220,167.38/x
  3. Step 3: Cross multiply
    356,210.32x = 491,063.70 × 220,167.38
  4. Step 4: Simplify right side
    356,210.32x = 108,116,208,242.11
  5. Step 5: Solve for x
    x = 108,116,208,242.11/356,210.32
  6. Step 6: Final answer
    x = 303,517.90

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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.