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Finding the Fourth Proportional to 215,573.20, 323,359.80 and 165,749.20

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Solution

The fourth proportional to 215,573.20, 323,359.80 and 165,749.20 is: 248,623.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,573.20 : 323,359.80 = 165,749.20 : x
  2. Step 2: Convert to fraction form
    215,573.20/323,359.80 = 165,749.20/x
  3. Step 3: Cross multiply
    215,573.20x = 323,359.80 × 165,749.20
  4. Step 4: Simplify right side
    215,573.20x = 53,596,628,162.16
  5. Step 5: Solve for x
    x = 53,596,628,162.16/215,573.20
  6. Step 6: Final answer
    x = 248,623.80

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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.