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Finding the Fourth Proportional to 556,049.90, 834,074.93 and 135,325.78

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Solution

The fourth proportional to 556,049.90, 834,074.93 and 135,325.78 is: 202,988.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,049.90 : 834,074.93 = 135,325.78 : x
  2. Step 2: Convert to fraction form
    556,049.90/834,074.93 = 135,325.78/x
  3. Step 3: Cross multiply
    556,049.90x = 834,074.93 × 135,325.78
  4. Step 4: Simplify right side
    556,049.90x = 112,871,840,480.70
  5. Step 5: Solve for x
    x = 112,871,840,480.70/556,049.90
  6. Step 6: Final answer
    x = 202,988.69

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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.