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Finding the Fourth Proportional to 356,330.54, 491,549.72 and 220,321.01

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Solution

The fourth proportional to 356,330.54, 491,549.72 and 220,321.01 is: 303,927.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,330.54 : 491,549.72 = 220,321.01 : x
  2. Step 2: Convert to fraction form
    356,330.54/491,549.72 = 220,321.01/x
  3. Step 3: Cross multiply
    356,330.54x = 491,549.72 × 220,321.01
  4. Step 4: Simplify right side
    356,330.54x = 108,298,730,902.89
  5. Step 5: Solve for x
    x = 108,298,730,902.89/356,330.54
  6. Step 6: Final answer
    x = 303,927.72

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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.