Home / 217,277.78-299,842.38-121,784.48

Finding the Fourth Proportional to 217,277.78, 299,842.38 and 121,784.48

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Solution

The fourth proportional to 217,277.78, 299,842.38 and 121,784.48 is: 168,062.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,277.78 : 299,842.38 = 121,784.48 : x
  2. Step 2: Convert to fraction form
    217,277.78/299,842.38 = 121,784.48/x
  3. Step 3: Cross multiply
    217,277.78x = 299,842.38 × 121,784.48
  4. Step 4: Simplify right side
    217,277.78x = 36,516,148,330.26
  5. Step 5: Solve for x
    x = 36,516,148,330.26/217,277.78
  6. Step 6: Final answer
    x = 168,062.05

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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.