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Finding the Fourth Proportional to 384,755.20, 577,132.80 and 104,272.45

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Solution

The fourth proportional to 384,755.20, 577,132.80 and 104,272.45 is: 156,408.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,755.20 : 577,132.80 = 104,272.45 : x
  2. Step 2: Convert to fraction form
    384,755.20/577,132.80 = 104,272.45/x
  3. Step 3: Cross multiply
    384,755.20x = 577,132.80 × 104,272.45
  4. Step 4: Simplify right side
    384,755.20x = 60,179,051,031.36
  5. Step 5: Solve for x
    x = 60,179,051,031.36/384,755.20
  6. Step 6: Final answer
    x = 156,408.68

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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.