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Finding the Fourth Proportional to 478,897.76, 718,558.48 and 251,138.96

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Solution

The fourth proportional to 478,897.76, 718,558.48 and 251,138.96 is: 376,819.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,897.76 : 718,558.48 = 251,138.96 : x
  2. Step 2: Convert to fraction form
    478,897.76/718,558.48 = 251,138.96/x
  3. Step 3: Cross multiply
    478,897.76x = 718,558.48 × 251,138.96
  4. Step 4: Simplify right side
    478,897.76x = 180,458,029,366.38
  5. Step 5: Solve for x
    x = 180,458,029,366.38/478,897.76
  6. Step 6: Final answer
    x = 376,819.53

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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.