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Finding the Fourth Proportional to 217,300.84, 325,869.33 and 90,949.84

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Solution

The fourth proportional to 217,300.84, 325,869.33 and 90,949.84 is: 136,390.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,300.84 : 325,869.33 = 90,949.84 : x
  2. Step 2: Convert to fraction form
    217,300.84/325,869.33 = 90,949.84/x
  3. Step 3: Cross multiply
    217,300.84x = 325,869.33 × 90,949.84
  4. Step 4: Simplify right side
    217,300.84x = 29,637,763,424.41
  5. Step 5: Solve for x
    x = 29,637,763,424.41/217,300.84
  6. Step 6: Final answer
    x = 136,390.47

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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.