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Finding the Fourth Proportional to 478,489.33, 717,734 and 141,503.73

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Solution

The fourth proportional to 478,489.33, 717,734 and 141,503.73 is: 212,255.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,489.33 : 717,734 = 141,503.73 : x
  2. Step 2: Convert to fraction form
    478,489.33/717,734 = 141,503.73/x
  3. Step 3: Cross multiply
    478,489.33x = 717,734 × 141,503.73
  4. Step 4: Simplify right side
    478,489.33x = 101,562,038,147.82
  5. Step 5: Solve for x
    x = 101,562,038,147.82/478,489.33
  6. Step 6: Final answer
    x = 212,255.60

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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.