Home / 659,257.20-988,558.30-209,919.40

Finding the Fourth Proportional to 659,257.20, 988,558.30 and 209,919.40

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Solution

The fourth proportional to 659,257.20, 988,558.30 and 209,919.40 is: 314,774.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,257.20 : 988,558.30 = 209,919.40 : x
  2. Step 2: Convert to fraction form
    659,257.20/988,558.30 = 209,919.40/x
  3. Step 3: Cross multiply
    659,257.20x = 988,558.30 × 209,919.40
  4. Step 4: Simplify right side
    659,257.20x = 207,517,565,201.02
  5. Step 5: Solve for x
    x = 207,517,565,201.02/659,257.20
  6. Step 6: Final answer
    x = 314,774.82

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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.