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Finding the Fourth Proportional to 478,051.20, 717,163.20 and 240,796.80

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Solution

The fourth proportional to 478,051.20, 717,163.20 and 240,796.80 is: 361,238.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,051.20 : 717,163.20 = 240,796.80 : x
  2. Step 2: Convert to fraction form
    478,051.20/717,163.20 = 240,796.80/x
  3. Step 3: Cross multiply
    478,051.20x = 717,163.20 × 240,796.80
  4. Step 4: Simplify right side
    478,051.20x = 172,690,603,637.76
  5. Step 5: Solve for x
    x = 172,690,603,637.76/478,051.20
  6. Step 6: Final answer
    x = 361,238.72

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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.