Home / 278,828.47-418,007.58-120,938.01

Finding the Fourth Proportional to 278,828.47, 418,007.58 and 120,938.01

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Solution

The fourth proportional to 278,828.47, 418,007.58 and 120,938.01 is: 181,305.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,828.47 : 418,007.58 = 120,938.01 : x
  2. Step 2: Convert to fraction form
    278,828.47/418,007.58 = 120,938.01/x
  3. Step 3: Cross multiply
    278,828.47x = 418,007.58 × 120,938.01
  4. Step 4: Simplify right side
    278,828.47x = 50,553,004,890.12
  5. Step 5: Solve for x
    x = 50,553,004,890.12/278,828.47
  6. Step 6: Final answer
    x = 181,305.03

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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.