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Finding the Fourth Proportional to 290,320.68, 435,311.52 and 112,620.04

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Solution

The fourth proportional to 290,320.68, 435,311.52 and 112,620.04 is: 168,864.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,320.68 : 435,311.52 = 112,620.04 : x
  2. Step 2: Convert to fraction form
    290,320.68/435,311.52 = 112,620.04/x
  3. Step 3: Cross multiply
    290,320.68x = 435,311.52 × 112,620.04
  4. Step 4: Simplify right side
    290,320.68x = 49,024,800,794.86
  5. Step 5: Solve for x
    x = 49,024,800,794.86/290,320.68
  6. Step 6: Final answer
    x = 168,864.31

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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.