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Finding the Fourth Proportional to 215,896.32, 297,973.08 and 131,069.88

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Solution

The fourth proportional to 215,896.32, 297,973.08 and 131,069.88 is: 180,898.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,896.32 : 297,973.08 = 131,069.88 : x
  2. Step 2: Convert to fraction form
    215,896.32/297,973.08 = 131,069.88/x
  3. Step 3: Cross multiply
    215,896.32x = 297,973.08 × 131,069.88
  4. Step 4: Simplify right side
    215,896.32x = 39,055,295,838.83
  5. Step 5: Solve for x
    x = 39,055,295,838.83/215,896.32
  6. Step 6: Final answer
    x = 180,898.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.