Home / 217,216.24-299,766.50-121,719.40

Finding the Fourth Proportional to 217,216.24, 299,766.50 and 121,719.40

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Solution

The fourth proportional to 217,216.24, 299,766.50 and 121,719.40 is: 167,977.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,216.24 : 299,766.50 = 121,719.40 : x
  2. Step 2: Convert to fraction form
    217,216.24/299,766.50 = 121,719.40/x
  3. Step 3: Cross multiply
    217,216.24x = 299,766.50 × 121,719.40
  4. Step 4: Simplify right side
    217,216.24x = 36,487,398,520.10
  5. Step 5: Solve for x
    x = 36,487,398,520.10/217,216.24
  6. Step 6: Final answer
    x = 167,977.30

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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.