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Finding the Fourth Proportional to 221,346,652.80, 332,019,979.20 and 68,000,336.40

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Solution

The fourth proportional to 221,346,652.80, 332,019,979.20 and 68,000,336.40 is: 102,000,504.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,346,652.80 : 332,019,979.20 = 68,000,336.40 : x
  2. Step 2: Convert to fraction form
    221,346,652.80/332,019,979.20 = 68,000,336.40/x
  3. Step 3: Cross multiply
    221,346,652.80x = 332,019,979.20 × 68,000,336.40
  4. Step 4: Simplify right side
    221,346,652.80x = 22,577,470,277,121,004
  5. Step 5: Solve for x
    x = 22,577,470,277,121,004/221,346,652.80
  6. Step 6: Final answer
    x = 102,000,504.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.