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Finding the Fourth Proportional to 356,354.55, 491,582.84 and 220,345.02

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Solution

The fourth proportional to 356,354.55, 491,582.84 and 220,345.02 is: 303,960.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,354.55 : 491,582.84 = 220,345.02 : x
  2. Step 2: Convert to fraction form
    356,354.55/491,582.84 = 220,345.02/x
  3. Step 3: Cross multiply
    356,354.55x = 491,582.84 × 220,345.02
  4. Step 4: Simplify right side
    356,354.55x = 108,317,829,609.73
  5. Step 5: Solve for x
    x = 108,317,829,609.73/356,354.55
  6. Step 6: Final answer
    x = 303,960.84

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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.