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Finding the Fourth Proportional to 215,636.99, 323,323.73 and 103,351.55

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Solution

The fourth proportional to 215,636.99, 323,323.73 and 103,351.55 is: 154,964.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,636.99 : 323,323.73 = 103,351.55 : x
  2. Step 2: Convert to fraction form
    215,636.99/323,323.73 = 103,351.55/x
  3. Step 3: Cross multiply
    215,636.99x = 323,323.73 × 103,351.55
  4. Step 4: Simplify right side
    215,636.99x = 33,416,008,130.52
  5. Step 5: Solve for x
    x = 33,416,008,130.52/215,636.99
  6. Step 6: Final answer
    x = 154,964.17

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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.