Home / 217,278.02-299,842.71-121,784.72

Finding the Fourth Proportional to 217,278.02, 299,842.71 and 121,784.72

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Solution

The fourth proportional to 217,278.02, 299,842.71 and 121,784.72 is: 168,062.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,278.02 : 299,842.71 = 121,784.72 : x
  2. Step 2: Convert to fraction form
    217,278.02/299,842.71 = 121,784.72/x
  3. Step 3: Cross multiply
    217,278.02x = 299,842.71 × 121,784.72
  4. Step 4: Simplify right side
    217,278.02x = 36,516,260,481.39
  5. Step 5: Solve for x
    x = 36,516,260,481.39/217,278.02
  6. Step 6: Final answer
    x = 168,062.38

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1.5x scale

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.