Home / 386,117.40-579,176.10-220,229.40

Finding the Fourth Proportional to 386,117.40, 579,176.10 and 220,229.40

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Solution

The fourth proportional to 386,117.40, 579,176.10 and 220,229.40 is: 330,344.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,117.40 : 579,176.10 = 220,229.40 : x
  2. Step 2: Convert to fraction form
    386,117.40/579,176.10 = 220,229.40/x
  3. Step 3: Cross multiply
    386,117.40x = 579,176.10 × 220,229.40
  4. Step 4: Simplify right side
    386,117.40x = 127,551,604,997.34
  5. Step 5: Solve for x
    x = 127,551,604,997.34/386,117.40
  6. Step 6: Final answer
    x = 330,344.10

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Similar ratio
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1.5x scale

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.