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Finding the Fourth Proportional to 252,066.66, 347,849.82 and 138,888.60

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Solution

The fourth proportional to 252,066.66, 347,849.82 and 138,888.60 is: 191,665.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,066.66 : 347,849.82 = 138,888.60 : x
  2. Step 2: Convert to fraction form
    252,066.66/347,849.82 = 138,888.60/x
  3. Step 3: Cross multiply
    252,066.66x = 347,849.82 × 138,888.60
  4. Step 4: Simplify right side
    252,066.66x = 48,312,374,510.05
  5. Step 5: Solve for x
    x = 48,312,374,510.05/252,066.66
  6. Step 6: Final answer
    x = 191,665.07

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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.