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Finding the Fourth Proportional to 303,109.54, 454,532.43 and 86,920.66

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Solution

The fourth proportional to 303,109.54, 454,532.43 and 86,920.66 is: 130,343.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,109.54 : 454,532.43 = 86,920.66 : x
  2. Step 2: Convert to fraction form
    303,109.54/454,532.43 = 86,920.66/x
  3. Step 3: Cross multiply
    303,109.54x = 454,532.43 × 86,920.66
  4. Step 4: Simplify right side
    303,109.54x = 39,508,258,807.00
  5. Step 5: Solve for x
    x = 39,508,258,807.00/303,109.54
  6. Step 6: Final answer
    x = 130,343.17

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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.