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Finding the Fourth Proportional to 252,065.88, 347,851.98 and 138,888.72

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Solution

The fourth proportional to 252,065.88, 347,851.98 and 138,888.72 is: 191,667.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,065.88 : 347,851.98 = 138,888.72 : x
  2. Step 2: Convert to fraction form
    252,065.88/347,851.98 = 138,888.72/x
  3. Step 3: Cross multiply
    252,065.88x = 347,851.98 × 138,888.72
  4. Step 4: Simplify right side
    252,065.88x = 48,312,716,251.67
  5. Step 5: Solve for x
    x = 48,312,716,251.67/252,065.88
  6. Step 6: Final answer
    x = 191,667.02

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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.