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Finding the Fourth Proportional to 356,695.92, 492,290.64 and 220,773.60

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Solution

The fourth proportional to 356,695.92, 492,290.64 and 220,773.60 is: 304,698.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,695.92 : 492,290.64 = 220,773.60 : x
  2. Step 2: Convert to fraction form
    356,695.92/492,290.64 = 220,773.60/x
  3. Step 3: Cross multiply
    356,695.92x = 492,290.64 × 220,773.60
  4. Step 4: Simplify right side
    356,695.92x = 108,684,776,839.10
  5. Step 5: Solve for x
    x = 108,684,776,839.10/356,695.92
  6. Step 6: Final answer
    x = 304,698.68

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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.