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Finding the Fourth Proportional to 218,801.67, 301,942.13 and 123,306.45

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Solution

The fourth proportional to 218,801.67, 301,942.13 and 123,306.45 is: 170,160.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,801.67 : 301,942.13 = 123,306.45 : x
  2. Step 2: Convert to fraction form
    218,801.67/301,942.13 = 123,306.45/x
  3. Step 3: Cross multiply
    218,801.67x = 301,942.13 × 123,306.45
  4. Step 4: Simplify right side
    218,801.67x = 37,231,411,539.21
  5. Step 5: Solve for x
    x = 37,231,411,539.21/218,801.67
  6. Step 6: Final answer
    x = 170,160.55

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1.5x scale

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.