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Finding the Fourth Proportional to 518,352.42, 777,612 and 181,385.58

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Solution

The fourth proportional to 518,352.42, 777,612 and 181,385.58 is: 272,107.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,352.42 : 777,612 = 181,385.58 : x
  2. Step 2: Convert to fraction form
    518,352.42/777,612 = 181,385.58/x
  3. Step 3: Cross multiply
    518,352.42x = 777,612 × 181,385.58
  4. Step 4: Simplify right side
    518,352.42x = 141,047,603,634.96
  5. Step 5: Solve for x
    x = 141,047,603,634.96/518,352.42
  6. Step 6: Final answer
    x = 272,107.54

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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.