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Finding the Fourth Proportional to 289,935,825.80, 400,111,498.80 and 159,555,633.80

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Solution

The fourth proportional to 289,935,825.80, 400,111,498.80 and 159,555,633.80 is: 220,186,807.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,935,825.80 : 400,111,498.80 = 159,555,633.80 : x
  2. Step 2: Convert to fraction form
    289,935,825.80/400,111,498.80 = 159,555,633.80/x
  3. Step 3: Cross multiply
    289,935,825.80x = 400,111,498.80 × 159,555,633.80
  4. Step 4: Simplify right side
    289,935,825.80x = 63,840,043,781,701,944
  5. Step 5: Solve for x
    x = 63,840,043,781,701,944/289,935,825.80
  6. Step 6: Final answer
    x = 220,186,807.22

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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.