Home / 221,870,799.55-306,170,500.12-121,397,062.15

Finding the Fourth Proportional to 221,870,799.55, 306,170,500.12 and 121,397,062.15

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Solution

The fourth proportional to 221,870,799.55, 306,170,500.12 and 121,397,062.15 is: 167,521,815.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,870,799.55 : 306,170,500.12 = 121,397,062.15 : x
  2. Step 2: Convert to fraction form
    221,870,799.55/306,170,500.12 = 121,397,062.15/x
  3. Step 3: Cross multiply
    221,870,799.55x = 306,170,500.12 × 121,397,062.15
  4. Step 4: Simplify right side
    221,870,799.55x = 37,168,199,231,564,224
  5. Step 5: Solve for x
    x = 37,168,199,231,564,224/221,870,799.55
  6. Step 6: Final answer
    x = 167,521,815.88

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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.