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Finding the Fourth Proportional to 217,281.80, 325,728.30 and 84,117.80

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Solution

The fourth proportional to 217,281.80, 325,728.30 and 84,117.80 is: 126,101.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,281.80 : 325,728.30 = 84,117.80 : x
  2. Step 2: Convert to fraction form
    217,281.80/325,728.30 = 84,117.80/x
  3. Step 3: Cross multiply
    217,281.80x = 325,728.30 × 84,117.80
  4. Step 4: Simplify right side
    217,281.80x = 27,399,547,993.74
  5. Step 5: Solve for x
    x = 27,399,547,993.74/217,281.80
  6. Step 6: Final answer
    x = 126,101.44

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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.