Home / 309,929.48-427,217.46-202,445.72

Finding the Fourth Proportional to 309,929.48, 427,217.46 and 202,445.72

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Solution

The fourth proportional to 309,929.48, 427,217.46 and 202,445.72 is: 279,058.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,929.48 : 427,217.46 = 202,445.72 : x
  2. Step 2: Convert to fraction form
    309,929.48/427,217.46 = 202,445.72/x
  3. Step 3: Cross multiply
    309,929.48x = 427,217.46 × 202,445.72
  4. Step 4: Simplify right side
    309,929.48x = 86,488,346,286.27
  5. Step 5: Solve for x
    x = 86,488,346,286.27/309,929.48
  6. Step 6: Final answer
    x = 279,058.15

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1.5x scale

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.