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Finding the Fourth Proportional to 193,479.80, 290,438.40 and 149,302.40

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Solution

The fourth proportional to 193,479.80, 290,438.40 and 149,302.40 is: 224,122.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,479.80 : 290,438.40 = 149,302.40 : x
  2. Step 2: Convert to fraction form
    193,479.80/290,438.40 = 149,302.40/x
  3. Step 3: Cross multiply
    193,479.80x = 290,438.40 × 149,302.40
  4. Step 4: Simplify right side
    193,479.80x = 43,363,150,172.16
  5. Step 5: Solve for x
    x = 43,363,150,172.16/193,479.80
  6. Step 6: Final answer
    x = 224,122.36

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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.