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Finding the Fourth Proportional to 437,221.18, 655,733.32 and 285,370.48

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Solution

The fourth proportional to 437,221.18, 655,733.32 and 285,370.48 is: 427,991.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,221.18 : 655,733.32 = 285,370.48 : x
  2. Step 2: Convert to fraction form
    437,221.18/655,733.32 = 285,370.48/x
  3. Step 3: Cross multiply
    437,221.18x = 655,733.32 × 285,370.48
  4. Step 4: Simplify right side
    437,221.18x = 187,126,932,280.39
  5. Step 5: Solve for x
    x = 187,126,932,280.39/437,221.18
  6. Step 6: Final answer
    x = 427,991.46

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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.