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Finding the Fourth Proportional to 393,467.90, 590,201.85 and 156,980.30

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Solution

The fourth proportional to 393,467.90, 590,201.85 and 156,980.30 is: 235,470.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,467.90 : 590,201.85 = 156,980.30 : x
  2. Step 2: Convert to fraction form
    393,467.90/590,201.85 = 156,980.30/x
  3. Step 3: Cross multiply
    393,467.90x = 590,201.85 × 156,980.30
  4. Step 4: Simplify right side
    393,467.90x = 92,650,063,473.56
  5. Step 5: Solve for x
    x = 92,650,063,473.56/393,467.90
  6. Step 6: Final answer
    x = 235,470.45

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1.5x scale

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.