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Finding the Fourth Proportional to 516,551.28, 712,806.18 and 287,093.67

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Solution

The fourth proportional to 516,551.28, 712,806.18 and 287,093.67 is: 396,170.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    516,551.28 : 712,806.18 = 287,093.67 : x
  2. Step 2: Convert to fraction form
    516,551.28/712,806.18 = 287,093.67/x
  3. Step 3: Cross multiply
    516,551.28x = 712,806.18 × 287,093.67
  4. Step 4: Simplify right side
    516,551.28x = 204,642,138,465.26
  5. Step 5: Solve for x
    x = 204,642,138,465.26/516,551.28
  6. Step 6: Final answer
    x = 396,170.04

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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.