Home / 216,431.33-298,710.09-135,870.45

Finding the Fourth Proportional to 216,431.33, 298,710.09 and 135,870.45

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Solution

The fourth proportional to 216,431.33, 298,710.09 and 135,870.45 is: 187,523.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,431.33 : 298,710.09 = 135,870.45 : x
  2. Step 2: Convert to fraction form
    216,431.33/298,710.09 = 135,870.45/x
  3. Step 3: Cross multiply
    216,431.33x = 298,710.09 × 135,870.45
  4. Step 4: Simplify right side
    216,431.33x = 40,585,873,668.49
  5. Step 5: Solve for x
    x = 40,585,873,668.49/216,431.33
  6. Step 6: Final answer
    x = 187,523.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.