Home / 390,811.20-586,198.56-163,012.80

Finding the Fourth Proportional to 390,811.20, 586,198.56 and 163,012.80

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Solution

The fourth proportional to 390,811.20, 586,198.56 and 163,012.80 is: 244,511.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,811.20 : 586,198.56 = 163,012.80 : x
  2. Step 2: Convert to fraction form
    390,811.20/586,198.56 = 163,012.80/x
  3. Step 3: Cross multiply
    390,811.20x = 586,198.56 × 163,012.80
  4. Step 4: Simplify right side
    390,811.20x = 95,557,868,621.57
  5. Step 5: Solve for x
    x = 95,557,868,621.57/390,811.20
  6. Step 6: Final answer
    x = 244,511.59

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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.