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Finding the Fourth Proportional to 296,530.80, 445,141.80 and 178,335.60

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Solution

The fourth proportional to 296,530.80, 445,141.80 and 178,335.60 is: 267,711.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    296,530.80 : 445,141.80 = 178,335.60 : x
  2. Step 2: Convert to fraction form
    296,530.80/445,141.80 = 178,335.60/x
  3. Step 3: Cross multiply
    296,530.80x = 445,141.80 × 178,335.60
  4. Step 4: Simplify right side
    296,530.80x = 79,384,629,988.08
  5. Step 5: Solve for x
    x = 79,384,629,988.08/296,530.80
  6. Step 6: Final answer
    x = 267,711.25

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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.