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Finding the Fourth Proportional to 270,136.20, 372,810.40 and 149,301.08

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Solution

The fourth proportional to 270,136.20, 372,810.40 and 149,301.08 is: 206,047.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,136.20 : 372,810.40 = 149,301.08 : x
  2. Step 2: Convert to fraction form
    270,136.20/372,810.40 = 149,301.08/x
  3. Step 3: Cross multiply
    270,136.20x = 372,810.40 × 149,301.08
  4. Step 4: Simplify right side
    270,136.20x = 55,660,995,355.23
  5. Step 5: Solve for x
    x = 55,660,995,355.23/270,136.20
  6. Step 6: Final answer
    x = 206,047.89

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.