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Finding the Fourth Proportional to 402,226,686.80, 603,340,030.20 and 218,560,677.20

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Solution

The fourth proportional to 402,226,686.80, 603,340,030.20 and 218,560,677.20 is: 327,841,015.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,226,686.80 : 603,340,030.20 = 218,560,677.20 : x
  2. Step 2: Convert to fraction form
    402,226,686.80/603,340,030.20 = 218,560,677.20/x
  3. Step 3: Cross multiply
    402,226,686.80x = 603,340,030.20 × 218,560,677.20
  4. Step 4: Simplify right side
    402,226,686.80x = 131,866,405,582,380,448
  5. Step 5: Solve for x
    x = 131,866,405,582,380,448/402,226,686.80
  6. Step 6: Final answer
    x = 327,841,015.80

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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.