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Finding the Fourth Proportional to 305,351.78, 457,842.98 and 136,841.00

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Solution

The fourth proportional to 305,351.78, 457,842.98 and 136,841.00 is: 205,178.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,351.78 : 457,842.98 = 136,841.00 : x
  2. Step 2: Convert to fraction form
    305,351.78/457,842.98 = 136,841.00/x
  3. Step 3: Cross multiply
    305,351.78x = 457,842.98 × 136,841.00
  4. Step 4: Simplify right side
    305,351.78x = 62,651,689,279.07
  5. Step 5: Solve for x
    x = 62,651,689,279.07/305,351.78
  6. Step 6: Final answer
    x = 205,178.73

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.