Home / 385,364.20-578,046.30-219,476.20

Finding the Fourth Proportional to 385,364.20, 578,046.30 and 219,476.20

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Solution

The fourth proportional to 385,364.20, 578,046.30 and 219,476.20 is: 329,214.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,364.20 : 578,046.30 = 219,476.20 : x
  2. Step 2: Convert to fraction form
    385,364.20/578,046.30 = 219,476.20/x
  3. Step 3: Cross multiply
    385,364.20x = 578,046.30 × 219,476.20
  4. Step 4: Simplify right side
    385,364.20x = 126,867,405,348.06
  5. Step 5: Solve for x
    x = 126,867,405,348.06/385,364.20
  6. Step 6: Final answer
    x = 329,214.30

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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.