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Finding the Fourth Proportional to 210,226.84, 315,438.68 and 91,882.80

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Solution

The fourth proportional to 210,226.84, 315,438.68 and 91,882.80 is: 137,867.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,226.84 : 315,438.68 = 91,882.80 : x
  2. Step 2: Convert to fraction form
    210,226.84/315,438.68 = 91,882.80/x
  3. Step 3: Cross multiply
    210,226.84x = 315,438.68 × 91,882.80
  4. Step 4: Simplify right side
    210,226.84x = 28,983,389,376.41
  5. Step 5: Solve for x
    x = 28,983,389,376.41/210,226.84
  6. Step 6: Final answer
    x = 137,867.22

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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.