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Finding the Fourth Proportional to 216,855.84, 299,258.91 and 121,363.23

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Solution

The fourth proportional to 216,855.84, 299,258.91 and 121,363.23 is: 167,480.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,855.84 : 299,258.91 = 121,363.23 : x
  2. Step 2: Convert to fraction form
    216,855.84/299,258.91 = 121,363.23/x
  3. Step 3: Cross multiply
    216,855.84x = 299,258.91 × 121,363.23
  4. Step 4: Simplify right side
    216,855.84x = 36,319,027,923.88
  5. Step 5: Solve for x
    x = 36,319,027,923.88/216,855.84
  6. Step 6: Final answer
    x = 167,480.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.