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Finding the Fourth Proportional to 487,916.62, 673,310.48 and 270,135

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Solution

The fourth proportional to 487,916.62, 673,310.48 and 270,135 is: 372,778.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,916.62 : 673,310.48 = 270,135 : x
  2. Step 2: Convert to fraction form
    487,916.62/673,310.48 = 270,135/x
  3. Step 3: Cross multiply
    487,916.62x = 673,310.48 × 270,135
  4. Step 4: Simplify right side
    487,916.62x = 181,884,725,164.13
  5. Step 5: Solve for x
    x = 181,884,725,164.13/487,916.62
  6. Step 6: Final answer
    x = 372,778.30

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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.