Home / 386,047.40-578,876.70-228,324.20

Finding the Fourth Proportional to 386,047.40, 578,876.70 and 228,324.20

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Solution

The fourth proportional to 386,047.40, 578,876.70 and 228,324.20 is: 342,371.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,047.40 : 578,876.70 = 228,324.20 : x
  2. Step 2: Convert to fraction form
    386,047.40/578,876.70 = 228,324.20/x
  3. Step 3: Cross multiply
    386,047.40x = 578,876.70 × 228,324.20
  4. Step 4: Simplify right side
    386,047.40x = 132,171,559,426.14
  5. Step 5: Solve for x
    x = 132,171,559,426.14/386,047.40
  6. Step 6: Final answer
    x = 342,371.32

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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.