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Finding the Fourth Proportional to 379,557.80, 523,800.90 and 207,485.27

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Solution

The fourth proportional to 379,557.80, 523,800.90 and 207,485.27 is: 286,335.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,557.80 : 523,800.90 = 207,485.27 : x
  2. Step 2: Convert to fraction form
    379,557.80/523,800.90 = 207,485.27/x
  3. Step 3: Cross multiply
    379,557.80x = 523,800.90 × 207,485.27
  4. Step 4: Simplify right side
    379,557.80x = 108,680,971,162.74
  5. Step 5: Solve for x
    x = 108,680,971,162.74/379,557.80
  6. Step 6: Final answer
    x = 286,335.76

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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.