Home / 217,288.48-299,871.96-121,795.20

Finding the Fourth Proportional to 217,288.48, 299,871.96 and 121,795.20

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Solution

The fourth proportional to 217,288.48, 299,871.96 and 121,795.20 is: 168,085.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,288.48 : 299,871.96 = 121,795.20 : x
  2. Step 2: Convert to fraction form
    217,288.48/299,871.96 = 121,795.20/x
  3. Step 3: Cross multiply
    217,288.48x = 299,871.96 × 121,795.20
  4. Step 4: Simplify right side
    217,288.48x = 36,522,965,342.59
  5. Step 5: Solve for x
    x = 36,522,965,342.59/217,288.48
  6. Step 6: Final answer
    x = 168,085.14

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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.