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Finding the Fourth Proportional to 220,393.12, 304,136.12 and 124,908.64

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Solution

The fourth proportional to 220,393.12, 304,136.12 and 124,908.64 is: 172,370.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,393.12 : 304,136.12 = 124,908.64 : x
  2. Step 2: Convert to fraction form
    220,393.12/304,136.12 = 124,908.64/x
  3. Step 3: Cross multiply
    220,393.12x = 304,136.12 × 124,908.64
  4. Step 4: Simplify right side
    220,393.12x = 37,989,229,124.08
  5. Step 5: Solve for x
    x = 37,989,229,124.08/220,393.12
  6. Step 6: Final answer
    x = 172,370.30

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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.