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Finding the Fourth Proportional to 221,065,092.80, 331,594,528.80 and 99,896,350.40

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Solution

The fourth proportional to 221,065,092.80, 331,594,528.80 and 99,896,350.40 is: 149,843,120.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,065,092.80 : 331,594,528.80 = 99,896,350.40 : x
  2. Step 2: Convert to fraction form
    221,065,092.80/331,594,528.80 = 99,896,350.40/x
  3. Step 3: Cross multiply
    221,065,092.80x = 331,594,528.80 × 99,896,350.40
  4. Step 4: Simplify right side
    221,065,092.80x = 33,125,083,239,727,696
  5. Step 5: Solve for x
    x = 33,125,083,239,727,696/221,065,092.80
  6. Step 6: Final answer
    x = 149,843,120.05

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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.