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Finding the Fourth Proportional to 315,952.55, 435,883.97 and 220,515.11

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Solution

The fourth proportional to 315,952.55, 435,883.97 and 220,515.11 is: 304,219.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,952.55 : 435,883.97 = 220,515.11 : x
  2. Step 2: Convert to fraction form
    315,952.55/435,883.97 = 220,515.11/x
  3. Step 3: Cross multiply
    315,952.55x = 435,883.97 × 220,515.11
  4. Step 4: Simplify right side
    315,952.55x = 96,118,998,309.79
  5. Step 5: Solve for x
    x = 96,118,998,309.79/315,952.55
  6. Step 6: Final answer
    x = 304,219.73

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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.