Home / 222,358.08-306,851.20-121,756.16

Finding the Fourth Proportional to 222,358.08, 306,851.20 and 121,756.16

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Solution

The fourth proportional to 222,358.08, 306,851.20 and 121,756.16 is: 168,021.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,358.08 : 306,851.20 = 121,756.16 : x
  2. Step 2: Convert to fraction form
    222,358.08/306,851.20 = 121,756.16/x
  3. Step 3: Cross multiply
    222,358.08x = 306,851.20 × 121,756.16
  4. Step 4: Simplify right side
    222,358.08x = 37,361,023,803.39
  5. Step 5: Solve for x
    x = 37,361,023,803.39/222,358.08
  6. Step 6: Final answer
    x = 168,021.89

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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.