Home / 287,260.06-431,086.92-100,271.56

Finding the Fourth Proportional to 287,260.06, 431,086.92 and 100,271.56

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Solution

The fourth proportional to 287,260.06, 431,086.92 and 100,271.56 is: 150,476.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,260.06 : 431,086.92 = 100,271.56 : x
  2. Step 2: Convert to fraction form
    287,260.06/431,086.92 = 100,271.56/x
  3. Step 3: Cross multiply
    287,260.06x = 431,086.92 × 100,271.56
  4. Step 4: Simplify right side
    287,260.06x = 43,225,757,964.00
  5. Step 5: Solve for x
    x = 43,225,757,964.00/287,260.06
  6. Step 6: Final answer
    x = 150,476.05

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1.5x scale

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.