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Finding the Fourth Proportional to 479,364.55, 661,500.95 and 275,271.89

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Solution

The fourth proportional to 479,364.55, 661,500.95 and 275,271.89 is: 379,862.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,364.55 : 661,500.95 = 275,271.89 : x
  2. Step 2: Convert to fraction form
    479,364.55/661,500.95 = 275,271.89/x
  3. Step 3: Cross multiply
    479,364.55x = 661,500.95 × 275,271.89
  4. Step 4: Simplify right side
    479,364.55x = 182,092,612,059.43
  5. Step 5: Solve for x
    x = 182,092,612,059.43/479,364.55
  6. Step 6: Final answer
    x = 379,862.49

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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.