Home / 287,231.06-431,043.42-100,242.56

Finding the Fourth Proportional to 287,231.06, 431,043.42 and 100,242.56

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Solution

The fourth proportional to 287,231.06, 431,043.42 and 100,242.56 is: 150,432.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,231.06 : 431,043.42 = 100,242.56 : x
  2. Step 2: Convert to fraction form
    287,231.06/431,043.42 = 100,242.56/x
  3. Step 3: Cross multiply
    287,231.06x = 431,043.42 × 100,242.56
  4. Step 4: Simplify right side
    287,231.06x = 43,208,897,345.47
  5. Step 5: Solve for x
    x = 43,208,897,345.47/287,231.06
  6. Step 6: Final answer
    x = 150,432.54

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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.