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Finding the Fourth Proportional to 381,559.60, 572,598.60 and 213,079.60

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Solution

The fourth proportional to 381,559.60, 572,598.60 and 213,079.60 is: 319,764.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,559.60 : 572,598.60 = 213,079.60 : x
  2. Step 2: Convert to fraction form
    381,559.60/572,598.60 = 213,079.60/x
  3. Step 3: Cross multiply
    381,559.60x = 572,598.60 × 213,079.60
  4. Step 4: Simplify right side
    381,559.60x = 122,009,080,648.56
  5. Step 5: Solve for x
    x = 122,009,080,648.56/381,559.60
  6. Step 6: Final answer
    x = 319,764.15

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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.