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Finding the Fourth Proportional to 161,263.78, 240,864.40 and 146,043.68

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Solution

The fourth proportional to 161,263.78, 240,864.40 and 146,043.68 is: 218,131.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,263.78 : 240,864.40 = 146,043.68 : x
  2. Step 2: Convert to fraction form
    161,263.78/240,864.40 = 146,043.68/x
  3. Step 3: Cross multiply
    161,263.78x = 240,864.40 × 146,043.68
  4. Step 4: Simplify right side
    161,263.78x = 35,176,722,335.22
  5. Step 5: Solve for x
    x = 35,176,722,335.22/161,263.78
  6. Step 6: Final answer
    x = 218,131.58

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.