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Finding the Fourth Proportional to 375,964.96, 518,329.20 and 298,696.72

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Solution

The fourth proportional to 375,964.96, 518,329.20 and 298,696.72 is: 411,802.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    375,964.96 : 518,329.20 = 298,696.72 : x
  2. Step 2: Convert to fraction form
    375,964.96/518,329.20 = 298,696.72/x
  3. Step 3: Cross multiply
    375,964.96x = 518,329.20 × 298,696.72
  4. Step 4: Simplify right side
    375,964.96x = 154,823,231,920.22
  5. Step 5: Solve for x
    x = 154,823,231,920.22/375,964.96
  6. Step 6: Final answer
    x = 411,802.29

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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.