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Finding the Fourth Proportional to 215,485.62, 323,120.28 and 125,557.40

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Solution

The fourth proportional to 215,485.62, 323,120.28 and 125,557.40 is: 188,273.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,485.62 : 323,120.28 = 125,557.40 : x
  2. Step 2: Convert to fraction form
    215,485.62/323,120.28 = 125,557.40/x
  3. Step 3: Cross multiply
    215,485.62x = 323,120.28 × 125,557.40
  4. Step 4: Simplify right side
    215,485.62x = 40,570,142,244.07
  5. Step 5: Solve for x
    x = 40,570,142,244.07/215,485.62
  6. Step 6: Final answer
    x = 188,273.08

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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.