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Finding the Fourth Proportional to 215,680.34, 323,520.51 and 65,921.06

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Solution

The fourth proportional to 215,680.34, 323,520.51 and 65,921.06 is: 98,881.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,680.34 : 323,520.51 = 65,921.06 : x
  2. Step 2: Convert to fraction form
    215,680.34/323,520.51 = 65,921.06/x
  3. Step 3: Cross multiply
    215,680.34x = 323,520.51 × 65,921.06
  4. Step 4: Simplify right side
    215,680.34x = 21,326,814,950.94
  5. Step 5: Solve for x
    x = 21,326,814,950.94/215,680.34
  6. Step 6: Final answer
    x = 98,881.59

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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.