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Finding the Fourth Proportional to 253,712.28, 350,122.98 and 138,995.01

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Solution

The fourth proportional to 253,712.28, 350,122.98 and 138,995.01 is: 191,813.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,712.28 : 350,122.98 = 138,995.01 : x
  2. Step 2: Convert to fraction form
    253,712.28/350,122.98 = 138,995.01/x
  3. Step 3: Cross multiply
    253,712.28x = 350,122.98 × 138,995.01
  4. Step 4: Simplify right side
    253,712.28x = 48,665,347,106.33
  5. Step 5: Solve for x
    x = 48,665,347,106.33/253,712.28
  6. Step 6: Final answer
    x = 191,813.13

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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.