Home / 279,937,187.20-419,905,780.80-222,116,406.40

Finding the Fourth Proportional to 279,937,187.20, 419,905,780.80 and 222,116,406.40

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Solution

The fourth proportional to 279,937,187.20, 419,905,780.80 and 222,116,406.40 is: 333,174,609.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,937,187.20 : 419,905,780.80 = 222,116,406.40 : x
  2. Step 2: Convert to fraction form
    279,937,187.20/419,905,780.80 = 222,116,406.40/x
  3. Step 3: Cross multiply
    279,937,187.20x = 419,905,780.80 × 222,116,406.40
  4. Step 4: Simplify right side
    279,937,187.20x = 93,267,963,057,882,128
  5. Step 5: Solve for x
    x = 93,267,963,057,882,128/279,937,187.20
  6. Step 6: Final answer
    x = 333,174,609.60

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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.