Home / 287,918.80-431,878.24-154,615.68

Finding the Fourth Proportional to 287,918.80, 431,878.24 and 154,615.68

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Solution

The fourth proportional to 287,918.80, 431,878.24 and 154,615.68 is: 231,923.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,918.80 : 431,878.24 = 154,615.68 : x
  2. Step 2: Convert to fraction form
    287,918.80/431,878.24 = 154,615.68/x
  3. Step 3: Cross multiply
    287,918.80x = 431,878.24 × 154,615.68
  4. Step 4: Simplify right side
    287,918.80x = 66,775,147,754.80
  5. Step 5: Solve for x
    x = 66,775,147,754.80/287,918.80
  6. Step 6: Final answer
    x = 231,923.54

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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.