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Finding the Fourth Proportional to 298,085.67, 411,354.18 and 162,116.69

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Solution

The fourth proportional to 298,085.67, 411,354.18 and 162,116.69 is: 223,718.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,085.67 : 411,354.18 = 162,116.69 : x
  2. Step 2: Convert to fraction form
    298,085.67/411,354.18 = 162,116.69/x
  3. Step 3: Cross multiply
    298,085.67x = 411,354.18 × 162,116.69
  4. Step 4: Simplify right side
    298,085.67x = 66,687,376,022.49
  5. Step 5: Solve for x
    x = 66,687,376,022.49/298,085.67
  6. Step 6: Final answer
    x = 223,718.83

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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.