Home / 221,065,871.80-331,595,697.30-99,897,129.40

Finding the Fourth Proportional to 221,065,871.80, 331,595,697.30 and 99,897,129.40

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Solution

The fourth proportional to 221,065,871.80, 331,595,697.30 and 99,897,129.40 is: 149,844,288.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,065,871.80 : 331,595,697.30 = 99,897,129.40 : x
  2. Step 2: Convert to fraction form
    221,065,871.80/331,595,697.30 = 99,897,129.40/x
  3. Step 3: Cross multiply
    221,065,871.80x = 331,595,697.30 × 99,897,129.40
  4. Step 4: Simplify right side
    221,065,871.80x = 33,125,458,281,661,332
  5. Step 5: Solve for x
    x = 33,125,458,281,661,332/221,065,871.80
  6. Step 6: Final answer
    x = 149,844,288.55

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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.