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Finding the Fourth Proportional to 218,113.46, 326,936.91 and 99,607.22

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Solution

The fourth proportional to 218,113.46, 326,936.91 and 99,607.22 is: 149,304.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,113.46 : 326,936.91 = 99,607.22 : x
  2. Step 2: Convert to fraction form
    218,113.46/326,936.91 = 99,607.22/x
  3. Step 3: Cross multiply
    218,113.46x = 326,936.91 × 99,607.22
  4. Step 4: Simplify right side
    218,113.46x = 32,565,276,720.49
  5. Step 5: Solve for x
    x = 32,565,276,720.49/218,113.46
  6. Step 6: Final answer
    x = 149,304.30

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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.