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Finding the Fourth Proportional to 255,489.12, 352,561.01 and 140,763.69

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Solution

The fourth proportional to 255,489.12, 352,561.01 and 140,763.69 is: 194,246.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,489.12 : 352,561.01 = 140,763.69 : x
  2. Step 2: Convert to fraction form
    255,489.12/352,561.01 = 140,763.69/x
  3. Step 3: Cross multiply
    255,489.12x = 352,561.01 × 140,763.69
  4. Step 4: Simplify right side
    255,489.12x = 49,627,788,013.91
  5. Step 5: Solve for x
    x = 49,627,788,013.91/255,489.12
  6. Step 6: Final answer
    x = 194,246.19

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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.