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Finding the Fourth Proportional to 215,714.89, 323,572.34 and 65,955.18

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Solution

The fourth proportional to 215,714.89, 323,572.34 and 65,955.18 is: 98,932.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,714.89 : 323,572.34 = 65,955.18 : x
  2. Step 2: Convert to fraction form
    215,714.89/323,572.34 = 65,955.18/x
  3. Step 3: Cross multiply
    215,714.89x = 323,572.34 × 65,955.18
  4. Step 4: Simplify right side
    215,714.89x = 21,341,271,927.72
  5. Step 5: Solve for x
    x = 21,341,271,927.72/215,714.89
  6. Step 6: Final answer
    x = 98,932.77

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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.