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Finding the Fourth Proportional to 290,394.72, 435,424.50 and 112,694.04

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Solution

The fourth proportional to 290,394.72, 435,424.50 and 112,694.04 is: 168,976.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,394.72 : 435,424.50 = 112,694.04 : x
  2. Step 2: Convert to fraction form
    290,394.72/435,424.50 = 112,694.04/x
  3. Step 3: Cross multiply
    290,394.72x = 435,424.50 × 112,694.04
  4. Step 4: Simplify right side
    290,394.72x = 49,069,746,019.98
  5. Step 5: Solve for x
    x = 49,069,746,019.98/290,394.72
  6. Step 6: Final answer
    x = 168,976.03

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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.