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Finding the Fourth Proportional to 216,772.80, 325,159.20 and 123,460.80

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Solution

The fourth proportional to 216,772.80, 325,159.20 and 123,460.80 is: 185,191.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,772.80 : 325,159.20 = 123,460.80 : x
  2. Step 2: Convert to fraction form
    216,772.80/325,159.20 = 123,460.80/x
  3. Step 3: Cross multiply
    216,772.80x = 325,159.20 × 123,460.80
  4. Step 4: Simplify right side
    216,772.80x = 40,144,414,959.36
  5. Step 5: Solve for x
    x = 40,144,414,959.36/216,772.80
  6. Step 6: Final answer
    x = 185,191.20

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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.