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Finding the Fourth Proportional to 252,687.48, 348,739.30 and 143,818.29

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Solution

The fourth proportional to 252,687.48, 348,739.30 and 143,818.29 is: 198,486.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,687.48 : 348,739.30 = 143,818.29 : x
  2. Step 2: Convert to fraction form
    252,687.48/348,739.30 = 143,818.29/x
  3. Step 3: Cross multiply
    252,687.48x = 348,739.30 × 143,818.29
  4. Step 4: Simplify right side
    252,687.48x = 50,155,088,038.10
  5. Step 5: Solve for x
    x = 50,155,088,038.10/252,687.48
  6. Step 6: Final answer
    x = 198,486.64

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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.