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Finding the Fourth Proportional to 290,079.04, 435,291.10 and 156,956.62

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Solution

The fourth proportional to 290,079.04, 435,291.10 and 156,956.62 is: 235,528.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,079.04 : 435,291.10 = 156,956.62 : x
  2. Step 2: Convert to fraction form
    290,079.04/435,291.10 = 156,956.62/x
  3. Step 3: Cross multiply
    290,079.04x = 435,291.10 × 156,956.62
  4. Step 4: Simplify right side
    290,079.04x = 68,321,819,772.08
  5. Step 5: Solve for x
    x = 68,321,819,772.08/290,079.04
  6. Step 6: Final answer
    x = 235,528.29

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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.