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Finding the Fourth Proportional to 290,323.43, 435,315.65 and 112,622.79

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Solution

The fourth proportional to 290,323.43, 435,315.65 and 112,622.79 is: 168,868.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,323.43 : 435,315.65 = 112,622.79 : x
  2. Step 2: Convert to fraction form
    290,323.43/435,315.65 = 112,622.79/x
  3. Step 3: Cross multiply
    290,323.43x = 435,315.65 × 112,622.79
  4. Step 4: Simplify right side
    290,323.43x = 49,026,462,470.55
  5. Step 5: Solve for x
    x = 49,026,462,470.55/290,323.43
  6. Step 6: Final answer
    x = 168,868.44

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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.