Home / 279,939.91-386,366.70-165,210.30

Finding the Fourth Proportional to 279,939.91, 386,366.70 and 165,210.30

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Solution

The fourth proportional to 279,939.91, 386,366.70 and 165,210.30 is: 228,019.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,939.91 : 386,366.70 = 165,210.30 : x
  2. Step 2: Convert to fraction form
    279,939.91/386,366.70 = 165,210.30/x
  3. Step 3: Cross multiply
    279,939.91x = 386,366.70 × 165,210.30
  4. Step 4: Simplify right side
    279,939.91x = 63,831,758,417.01
  5. Step 5: Solve for x
    x = 63,831,758,417.01/279,939.91
  6. Step 6: Final answer
    x = 228,019.50

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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.