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Finding the Fourth Proportional to 516,010.80, 774,016.20 and 136,930.80

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Solution

The fourth proportional to 516,010.80, 774,016.20 and 136,930.80 is: 205,396.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    516,010.80 : 774,016.20 = 136,930.80 : x
  2. Step 2: Convert to fraction form
    516,010.80/774,016.20 = 136,930.80/x
  3. Step 3: Cross multiply
    516,010.80x = 774,016.20 × 136,930.80
  4. Step 4: Simplify right side
    516,010.80x = 105,986,657,478.96
  5. Step 5: Solve for x
    x = 105,986,657,478.96/516,010.80
  6. Step 6: Final answer
    x = 205,396.20

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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.