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Finding the Fourth Proportional to 606,290.30, 909,438.60 and 156,979.70

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Solution

The fourth proportional to 606,290.30, 909,438.60 and 156,979.70 is: 235,470.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    606,290.30 : 909,438.60 = 156,979.70 : x
  2. Step 2: Convert to fraction form
    606,290.30/909,438.60 = 156,979.70/x
  3. Step 3: Cross multiply
    606,290.30x = 909,438.60 × 156,979.70
  4. Step 4: Simplify right side
    606,290.30x = 142,763,398,596.42
  5. Step 5: Solve for x
    x = 142,763,398,596.42/606,290.30
  6. Step 6: Final answer
    x = 235,470.37

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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.