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Finding the Fourth Proportional to 290,575.06, 435,050.56 and 156,976.70

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Solution

The fourth proportional to 290,575.06, 435,050.56 and 156,976.70 is: 235,026.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,575.06 : 435,050.56 = 156,976.70 : x
  2. Step 2: Convert to fraction form
    290,575.06/435,050.56 = 156,976.70/x
  3. Step 3: Cross multiply
    290,575.06x = 435,050.56 × 156,976.70
  4. Step 4: Simplify right side
    290,575.06x = 68,292,801,241.95
  5. Step 5: Solve for x
    x = 68,292,801,241.95/290,575.06
  6. Step 6: Final answer
    x = 235,026.37

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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.