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Finding the Fourth Proportional to 252,937.79, 349,055.05 and 138,216.43

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Solution

The fourth proportional to 252,937.79, 349,055.05 and 138,216.43 is: 190,739.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,937.79 : 349,055.05 = 138,216.43 : x
  2. Step 2: Convert to fraction form
    252,937.79/349,055.05 = 138,216.43/x
  3. Step 3: Cross multiply
    252,937.79x = 349,055.05 × 138,216.43
  4. Step 4: Simplify right side
    252,937.79x = 48,245,141,756.89
  5. Step 5: Solve for x
    x = 48,245,141,756.89/252,937.79
  6. Step 6: Final answer
    x = 190,739.16

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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.