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Finding the Fourth Proportional to 310,323.20, 465,484.80 and 99,961.13

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Solution

The fourth proportional to 310,323.20, 465,484.80 and 99,961.13 is: 149,941.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,323.20 : 465,484.80 = 99,961.13 : x
  2. Step 2: Convert to fraction form
    310,323.20/465,484.80 = 99,961.13/x
  3. Step 3: Cross multiply
    310,323.20x = 465,484.80 × 99,961.13
  4. Step 4: Simplify right side
    310,323.20x = 46,530,384,278.40
  5. Step 5: Solve for x
    x = 46,530,384,278.40/310,323.20
  6. Step 6: Final answer
    x = 149,941.69

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.