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Finding the Fourth Proportional to 290,339.24, 435,677.50 and 112,968.68

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Solution

The fourth proportional to 290,339.24, 435,677.50 and 112,968.68 is: 169,518.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,339.24 : 435,677.50 = 112,968.68 : x
  2. Step 2: Convert to fraction form
    290,339.24/435,677.50 = 112,968.68/x
  3. Step 3: Cross multiply
    290,339.24x = 435,677.50 × 112,968.68
  4. Step 4: Simplify right side
    290,339.24x = 49,217,912,080.70
  5. Step 5: Solve for x
    x = 49,217,912,080.70/290,339.24
  6. Step 6: Final answer
    x = 169,518.64

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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.