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Finding the Fourth Proportional to 478,766.88, 660,732.12 and 274,851

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Solution

The fourth proportional to 478,766.88, 660,732.12 and 274,851 is: 379,313.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,766.88 : 660,732.12 = 274,851 : x
  2. Step 2: Convert to fraction form
    478,766.88/660,732.12 = 274,851/x
  3. Step 3: Cross multiply
    478,766.88x = 660,732.12 × 274,851
  4. Step 4: Simplify right side
    478,766.88x = 181,602,883,914.12
  5. Step 5: Solve for x
    x = 181,602,883,914.12/478,766.88
  6. Step 6: Final answer
    x = 379,313.80

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.