Home / 397,917.45-549,108.18-216,624.78

Finding the Fourth Proportional to 397,917.45, 549,108.18 and 216,624.78

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Solution

The fourth proportional to 397,917.45, 549,108.18 and 216,624.78 is: 298,932.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,917.45 : 549,108.18 = 216,624.78 : x
  2. Step 2: Convert to fraction form
    397,917.45/549,108.18 = 216,624.78/x
  3. Step 3: Cross multiply
    397,917.45x = 549,108.18 × 216,624.78
  4. Step 4: Simplify right side
    397,917.45x = 118,950,438,688.70
  5. Step 5: Solve for x
    x = 118,950,438,688.70/397,917.45
  6. Step 6: Final answer
    x = 298,932.45

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.