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Finding the Fourth Proportional to 516,015.80, 774,023.70 and 136,935.80

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Solution

The fourth proportional to 516,015.80, 774,023.70 and 136,935.80 is: 205,403.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    516,015.80 : 774,023.70 = 136,935.80 : x
  2. Step 2: Convert to fraction form
    516,015.80/774,023.70 = 136,935.80/x
  3. Step 3: Cross multiply
    516,015.80x = 774,023.70 × 136,935.80
  4. Step 4: Simplify right side
    516,015.80x = 105,991,554,578.46
  5. Step 5: Solve for x
    x = 105,991,554,578.46/516,015.80
  6. Step 6: Final answer
    x = 205,403.70

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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.