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Finding the Fourth Proportional to 216,422.40, 298,617.60 and 126,950.40

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Solution

The fourth proportional to 216,422.40, 298,617.60 and 126,950.40 is: 175,164.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,422.40 : 298,617.60 = 126,950.40 : x
  2. Step 2: Convert to fraction form
    216,422.40/298,617.60 = 126,950.40/x
  3. Step 3: Cross multiply
    216,422.40x = 298,617.60 × 126,950.40
  4. Step 4: Simplify right side
    216,422.40x = 37,909,623,767.04
  5. Step 5: Solve for x
    x = 37,909,623,767.04/216,422.40
  6. Step 6: Final answer
    x = 175,164.97

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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.