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Finding the Fourth Proportional to 508,722.71, 702,046.13 and 279,301.28

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Solution

The fourth proportional to 508,722.71, 702,046.13 and 279,301.28 is: 385,440.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,722.71 : 702,046.13 = 279,301.28 : x
  2. Step 2: Convert to fraction form
    508,722.71/702,046.13 = 279,301.28/x
  3. Step 3: Cross multiply
    508,722.71x = 702,046.13 × 279,301.28
  4. Step 4: Simplify right side
    508,722.71x = 196,082,377,821.31
  5. Step 5: Solve for x
    x = 196,082,377,821.31/508,722.71
  6. Step 6: Final answer
    x = 385,440.59

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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.