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Finding the Fourth Proportional to 356,615.72, 492,180.16 and 220,693.44

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Solution

The fourth proportional to 356,615.72, 492,180.16 and 220,693.44 is: 304,588.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,615.72 : 492,180.16 = 220,693.44 : x
  2. Step 2: Convert to fraction form
    356,615.72/492,180.16 = 220,693.44/x
  3. Step 3: Cross multiply
    356,615.72x = 492,180.16 × 220,693.44
  4. Step 4: Simplify right side
    356,615.72x = 108,620,932,610.15
  5. Step 5: Solve for x
    x = 108,620,932,610.15/356,615.72
  6. Step 6: Final answer
    x = 304,588.18

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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.