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Finding the Fourth Proportional to 290,281.88, 435,310.97 and 112,765.52

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Solution

The fourth proportional to 290,281.88, 435,310.97 and 112,765.52 is: 169,104.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,281.88 : 435,310.97 = 112,765.52 : x
  2. Step 2: Convert to fraction form
    290,281.88/435,310.97 = 112,765.52/x
  3. Step 3: Cross multiply
    290,281.88x = 435,310.97 × 112,765.52
  4. Step 4: Simplify right side
    290,281.88x = 49,088,065,153.37
  5. Step 5: Solve for x
    x = 49,088,065,153.37/290,281.88
  6. Step 6: Final answer
    x = 169,104.82

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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.