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Finding the Fourth Proportional to 215,492.31, 323,272.62 and 65,698.29

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Solution

The fourth proportional to 215,492.31, 323,272.62 and 65,698.29 is: 98,557.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,492.31 : 323,272.62 = 65,698.29 : x
  2. Step 2: Convert to fraction form
    215,492.31/323,272.62 = 65,698.29/x
  3. Step 3: Cross multiply
    215,492.31x = 323,272.62 × 65,698.29
  4. Step 4: Simplify right side
    215,492.31x = 21,238,458,337.82
  5. Step 5: Solve for x
    x = 21,238,458,337.82/215,492.31
  6. Step 6: Final answer
    x = 98,557.85

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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.