Home / 217,120.32-299,624.40-121,627.80

Finding the Fourth Proportional to 217,120.32, 299,624.40 and 121,627.80

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Solution

The fourth proportional to 217,120.32, 299,624.40 and 121,627.80 is: 167,845.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,120.32 : 299,624.40 = 121,627.80 : x
  2. Step 2: Convert to fraction form
    217,120.32/299,624.40 = 121,627.80/x
  3. Step 3: Cross multiply
    217,120.32x = 299,624.40 × 121,627.80
  4. Step 4: Simplify right side
    217,120.32x = 36,442,656,598.32
  5. Step 5: Solve for x
    x = 36,442,656,598.32/217,120.32
  6. Step 6: Final answer
    x = 167,845.44

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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.