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Finding the Fourth Proportional to 253,471.74, 349,790.49 and 138,750.42

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Solution

The fourth proportional to 253,471.74, 349,790.49 and 138,750.42 is: 191,475.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,471.74 : 349,790.49 = 138,750.42 : x
  2. Step 2: Convert to fraction form
    253,471.74/349,790.49 = 138,750.42/x
  3. Step 3: Cross multiply
    253,471.74x = 349,790.49 × 138,750.42
  4. Step 4: Simplify right side
    253,471.74x = 48,533,577,399.51
  5. Step 5: Solve for x
    x = 48,533,577,399.51/253,471.74
  6. Step 6: Final answer
    x = 191,475.30

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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.