Home / 278,570.50-418,021.80-101,091.36

Finding the Fourth Proportional to 278,570.50, 418,021.80 and 101,091.36

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Solution

The fourth proportional to 278,570.50, 418,021.80 and 101,091.36 is: 151,697.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,570.50 : 418,021.80 = 101,091.36 : x
  2. Step 2: Convert to fraction form
    278,570.50/418,021.80 = 101,091.36/x
  3. Step 3: Cross multiply
    278,570.50x = 418,021.80 × 101,091.36
  4. Step 4: Simplify right side
    278,570.50x = 42,258,392,271.65
  5. Step 5: Solve for x
    x = 42,258,392,271.65/278,570.50
  6. Step 6: Final answer
    x = 151,697.30

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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.