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Finding the Fourth Proportional to 252,030.64, 347,803.14 and 138,853.12

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Solution

The fourth proportional to 252,030.64, 347,803.14 and 138,853.12 is: 191,617.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,030.64 : 347,803.14 = 138,853.12 : x
  2. Step 2: Convert to fraction form
    252,030.64/347,803.14 = 138,853.12/x
  3. Step 3: Cross multiply
    252,030.64x = 347,803.14 × 138,853.12
  4. Step 4: Simplify right side
    252,030.64x = 48,293,551,134.80
  5. Step 5: Solve for x
    x = 48,293,551,134.80/252,030.64
  6. Step 6: Final answer
    x = 191,617.78

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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.