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Finding the Fourth Proportional to 290,477.80, 435,630.30 and 112,882.60

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Solution

The fourth proportional to 290,477.80, 435,630.30 and 112,882.60 is: 169,290.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,477.80 : 435,630.30 = 112,882.60 : x
  2. Step 2: Convert to fraction form
    290,477.80/435,630.30 = 112,882.60/x
  3. Step 3: Cross multiply
    290,477.80x = 435,630.30 × 112,882.60
  4. Step 4: Simplify right side
    290,477.80x = 49,175,080,902.78
  5. Step 5: Solve for x
    x = 49,175,080,902.78/290,477.80
  6. Step 6: Final answer
    x = 169,290.32

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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.