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Finding the Fourth Proportional to 147,382.80, 221,090.40 and 53,908.80

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Solution

The fourth proportional to 147,382.80, 221,090.40 and 53,908.80 is: 80,869.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,382.80 : 221,090.40 = 53,908.80 : x
  2. Step 2: Convert to fraction form
    147,382.80/221,090.40 = 53,908.80/x
  3. Step 3: Cross multiply
    147,382.80x = 221,090.40 × 53,908.80
  4. Step 4: Simplify right side
    147,382.80x = 11,918,718,155.52
  5. Step 5: Solve for x
    x = 11,918,718,155.52/147,382.80
  6. Step 6: Final answer
    x = 80,869.13

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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.