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Finding the Fourth Proportional to 517,318.85, 775,752.05 and 260,993.72

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Solution

The fourth proportional to 517,318.85, 775,752.05 and 260,993.72 is: 391,376.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    517,318.85 : 775,752.05 = 260,993.72 : x
  2. Step 2: Convert to fraction form
    517,318.85/775,752.05 = 260,993.72/x
  3. Step 3: Cross multiply
    517,318.85x = 775,752.05 × 260,993.72
  4. Step 4: Simplify right side
    517,318.85x = 202,466,412,022.16
  5. Step 5: Solve for x
    x = 202,466,412,022.16/517,318.85
  6. Step 6: Final answer
    x = 391,376.45

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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.