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Finding the Fourth Proportional to 520,074.50, 717,707.13 and 281,610.50

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Solution

The fourth proportional to 520,074.50, 717,707.13 and 281,610.50 is: 388,624.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,074.50 : 717,707.13 = 281,610.50 : x
  2. Step 2: Convert to fraction form
    520,074.50/717,707.13 = 281,610.50/x
  3. Step 3: Cross multiply
    520,074.50x = 717,707.13 × 281,610.50
  4. Step 4: Simplify right side
    520,074.50x = 202,113,863,732.87
  5. Step 5: Solve for x
    x = 202,113,863,732.87/520,074.50
  6. Step 6: Final answer
    x = 388,624.83

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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.