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Finding the Fourth Proportional to 349,630.40, 524,834.40 and 216,660.80

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Solution

The fourth proportional to 349,630.40, 524,834.40 and 216,660.80 is: 325,232.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    349,630.40 : 524,834.40 = 216,660.80 : x
  2. Step 2: Convert to fraction form
    349,630.40/524,834.40 = 216,660.80/x
  3. Step 3: Cross multiply
    349,630.40x = 524,834.40 × 216,660.80
  4. Step 4: Simplify right side
    349,630.40x = 113,711,040,971.52
  5. Step 5: Solve for x
    x = 113,711,040,971.52/349,630.40
  6. Step 6: Final answer
    x = 325,232.13

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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.