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Finding the Fourth Proportional to 290,326.18, 435,319.77 and 112,625.54

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Solution

The fourth proportional to 290,326.18, 435,319.77 and 112,625.54 is: 168,872.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,326.18 : 435,319.77 = 112,625.54 : x
  2. Step 2: Convert to fraction form
    290,326.18/435,319.77 = 112,625.54/x
  3. Step 3: Cross multiply
    290,326.18x = 435,319.77 × 112,625.54
  4. Step 4: Simplify right side
    290,326.18x = 49,028,123,605.80
  5. Step 5: Solve for x
    x = 49,028,123,605.80/290,326.18
  6. Step 6: Final answer
    x = 168,872.55

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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.