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Finding the Fourth Proportional to 253,652.06, 350,027.36 and 138,931.20

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Solution

The fourth proportional to 253,652.06, 350,027.36 and 138,931.20 is: 191,718.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,652.06 : 350,027.36 = 138,931.20 : x
  2. Step 2: Convert to fraction form
    253,652.06/350,027.36 = 138,931.20/x
  3. Step 3: Cross multiply
    253,652.06x = 350,027.36 × 138,931.20
  4. Step 4: Simplify right side
    253,652.06x = 48,629,720,462.98
  5. Step 5: Solve for x
    x = 48,629,720,462.98/253,652.06
  6. Step 6: Final answer
    x = 191,718.22

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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.