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Finding the Fourth Proportional to 608,515.20, 911,995.20 and 292,291.20

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Solution

The fourth proportional to 608,515.20, 911,995.20 and 292,291.20 is: 438,063.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,515.20 : 911,995.20 = 292,291.20 : x
  2. Step 2: Convert to fraction form
    608,515.20/911,995.20 = 292,291.20/x
  3. Step 3: Cross multiply
    608,515.20x = 911,995.20 × 292,291.20
  4. Step 4: Simplify right side
    608,515.20x = 266,568,171,402.24
  5. Step 5: Solve for x
    x = 266,568,171,402.24/608,515.20
  6. Step 6: Final answer
    x = 438,063.29

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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.