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Finding the Fourth Proportional to 215,698.91, 323,549.18 and 65,938.62

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Solution

The fourth proportional to 215,698.91, 323,549.18 and 65,938.62 is: 98,908.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,698.91 : 323,549.18 = 65,938.62 : x
  2. Step 2: Convert to fraction form
    215,698.91/323,549.18 = 65,938.62/x
  3. Step 3: Cross multiply
    215,698.91x = 323,549.18 × 65,938.62
  4. Step 4: Simplify right side
    215,698.91x = 21,334,386,101.64
  5. Step 5: Solve for x
    x = 21,334,386,101.64/215,698.91
  6. Step 6: Final answer
    x = 98,908.18

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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.