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Finding the Fourth Proportional to 225,461.13, 311,136.48 and 123,493.02

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Solution

The fourth proportional to 225,461.13, 311,136.48 and 123,493.02 is: 170,420.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,461.13 : 311,136.48 = 123,493.02 : x
  2. Step 2: Convert to fraction form
    225,461.13/311,136.48 = 123,493.02/x
  3. Step 3: Cross multiply
    225,461.13x = 311,136.48 × 123,493.02
  4. Step 4: Simplify right side
    225,461.13x = 38,423,182,644.48
  5. Step 5: Solve for x
    x = 38,423,182,644.48/225,461.13
  6. Step 6: Final answer
    x = 170,420.43

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1.5x scale

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.