Home / 412,985.60-619,478.40-163,635.20

Finding the Fourth Proportional to 412,985.60, 619,478.40 and 163,635.20

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Solution

The fourth proportional to 412,985.60, 619,478.40 and 163,635.20 is: 245,452.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,985.60 : 619,478.40 = 163,635.20 : x
  2. Step 2: Convert to fraction form
    412,985.60/619,478.40 = 163,635.20/x
  3. Step 3: Cross multiply
    412,985.60x = 619,478.40 × 163,635.20
  4. Step 4: Simplify right side
    412,985.60x = 101,368,471,879.68
  5. Step 5: Solve for x
    x = 101,368,471,879.68/412,985.60
  6. Step 6: Final answer
    x = 245,452.80

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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.