Home / 419,443.28-578,828.76-228,456.08

Finding the Fourth Proportional to 419,443.28, 578,828.76 and 228,456.08

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Solution

The fourth proportional to 419,443.28, 578,828.76 and 228,456.08 is: 315,267.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,443.28 : 578,828.76 = 228,456.08 : x
  2. Step 2: Convert to fraction form
    419,443.28/578,828.76 = 228,456.08/x
  3. Step 3: Cross multiply
    419,443.28x = 578,828.76 × 228,456.08
  4. Step 4: Simplify right side
    419,443.28x = 132,236,949,500.86
  5. Step 5: Solve for x
    x = 132,236,949,500.86/419,443.28
  6. Step 6: Final answer
    x = 315,267.77

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1.5x scale

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.