Home / 409,723.21-614,648.13-139,788.15

Finding the Fourth Proportional to 409,723.21, 614,648.13 and 139,788.15

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Solution

The fourth proportional to 409,723.21, 614,648.13 and 139,788.15 is: 209,703.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    409,723.21 : 614,648.13 = 139,788.15 : x
  2. Step 2: Convert to fraction form
    409,723.21/614,648.13 = 139,788.15/x
  3. Step 3: Cross multiply
    409,723.21x = 614,648.13 × 139,788.15
  4. Step 4: Simplify right side
    409,723.21x = 85,920,524,993.66
  5. Step 5: Solve for x
    x = 85,920,524,993.66/409,723.21
  6. Step 6: Final answer
    x = 209,703.83

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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.