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Finding the Fourth Proportional to 215,729.70, 323,351.55 and 103,463.70

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Solution

The fourth proportional to 215,729.70, 323,351.55 and 103,463.70 is: 155,079.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,729.70 : 323,351.55 = 103,463.70 : x
  2. Step 2: Convert to fraction form
    215,729.70/323,351.55 = 103,463.70/x
  3. Step 3: Cross multiply
    215,729.70x = 323,351.55 × 103,463.70
  4. Step 4: Simplify right side
    215,729.70x = 33,455,147,763.74
  5. Step 5: Solve for x
    x = 33,455,147,763.74/215,729.70
  6. Step 6: Final answer
    x = 155,079.01

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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.