Home / 397,862.64-549,057.45-216,579.78

Finding the Fourth Proportional to 397,862.64, 549,057.45 and 216,579.78

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Solution

The fourth proportional to 397,862.64, 549,057.45 and 216,579.78 is: 298,883.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,862.64 : 549,057.45 = 216,579.78 : x
  2. Step 2: Convert to fraction form
    397,862.64/549,057.45 = 216,579.78/x
  3. Step 3: Cross multiply
    397,862.64x = 549,057.45 × 216,579.78
  4. Step 4: Simplify right side
    397,862.64x = 118,914,741,728.36
  5. Step 5: Solve for x
    x = 118,914,741,728.36/397,862.64
  6. Step 6: Final answer
    x = 298,883.91

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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.