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Finding the Fourth Proportional to 478,208.72, 717,313.08 and 145,781.84

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Solution

The fourth proportional to 478,208.72, 717,313.08 and 145,781.84 is: 218,672.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,208.72 : 717,313.08 = 145,781.84 : x
  2. Step 2: Convert to fraction form
    478,208.72/717,313.08 = 145,781.84/x
  3. Step 3: Cross multiply
    478,208.72x = 717,313.08 × 145,781.84
  4. Step 4: Simplify right side
    478,208.72x = 104,571,220,658.47
  5. Step 5: Solve for x
    x = 104,571,220,658.47/478,208.72
  6. Step 6: Final answer
    x = 218,672.76

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Similar ratio
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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.