Home / 279,938.91-386,365.32-165,209.30

Finding the Fourth Proportional to 279,938.91, 386,365.32 and 165,209.30

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Solution

The fourth proportional to 279,938.91, 386,365.32 and 165,209.30 is: 228,018.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,938.91 : 386,365.32 = 165,209.30 : x
  2. Step 2: Convert to fraction form
    279,938.91/386,365.32 = 165,209.30/x
  3. Step 3: Cross multiply
    279,938.91x = 386,365.32 × 165,209.30
  4. Step 4: Simplify right side
    279,938.91x = 63,831,142,129.65
  5. Step 5: Solve for x
    x = 63,831,142,129.65/279,938.91
  6. Step 6: Final answer
    x = 228,018.11

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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.