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Finding the Fourth Proportional to 478,504.20, 717,756.27 and 141,518.64

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Solution

The fourth proportional to 478,504.20, 717,756.27 and 141,518.64 is: 212,277.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,504.20 : 717,756.27 = 141,518.64 : x
  2. Step 2: Convert to fraction form
    478,504.20/717,756.27 = 141,518.64/x
  3. Step 3: Cross multiply
    478,504.20x = 717,756.27 × 141,518.64
  4. Step 4: Simplify right side
    478,504.20x = 101,575,891,181.87
  5. Step 5: Solve for x
    x = 101,575,891,181.87/478,504.20
  6. Step 6: Final answer
    x = 212,277.95

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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.