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Finding the Fourth Proportional to 290,450.59, 435,846.40 and 121,957.97

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Solution

The fourth proportional to 290,450.59, 435,846.40 and 121,957.97 is: 183,008.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,450.59 : 435,846.40 = 121,957.97 : x
  2. Step 2: Convert to fraction form
    290,450.59/435,846.40 = 121,957.97/x
  3. Step 3: Cross multiply
    290,450.59x = 435,846.40 × 121,957.97
  4. Step 4: Simplify right side
    290,450.59x = 53,154,939,691.68
  5. Step 5: Solve for x
    x = 53,154,939,691.68/290,450.59
  6. Step 6: Final answer
    x = 183,008.55

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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.