Home / 216,890.82-299,309.25-121,397.49

Finding the Fourth Proportional to 216,890.82, 299,309.25 and 121,397.49

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Solution

The fourth proportional to 216,890.82, 299,309.25 and 121,397.49 is: 167,528.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,890.82 : 299,309.25 = 121,397.49 : x
  2. Step 2: Convert to fraction form
    216,890.82/299,309.25 = 121,397.49/x
  3. Step 3: Cross multiply
    216,890.82x = 299,309.25 × 121,397.49
  4. Step 4: Simplify right side
    216,890.82x = 36,335,391,683.78
  5. Step 5: Solve for x
    x = 36,335,391,683.78/216,890.82
  6. Step 6: Final answer
    x = 167,528.49

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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.