Home / 386,480.60-579,964.10-164,861.40

Finding the Fourth Proportional to 386,480.60, 579,964.10 and 164,861.40

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Solution

The fourth proportional to 386,480.60, 579,964.10 and 164,861.40 is: 247,395.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,480.60 : 579,964.10 = 164,861.40 : x
  2. Step 2: Convert to fraction form
    386,480.60/579,964.10 = 164,861.40/x
  3. Step 3: Cross multiply
    386,480.60x = 579,964.10 × 164,861.40
  4. Step 4: Simplify right side
    386,480.60x = 95,613,693,475.74
  5. Step 5: Solve for x
    x = 95,613,693,475.74/386,480.60
  6. Step 6: Final answer
    x = 247,395.84

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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.