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Finding the Fourth Proportional to 508,718.24, 702,040 and 279,296.88

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Solution

The fourth proportional to 508,718.24, 702,040 and 279,296.88 is: 385,434.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,718.24 : 702,040 = 279,296.88 : x
  2. Step 2: Convert to fraction form
    508,718.24/702,040 = 279,296.88/x
  3. Step 3: Cross multiply
    508,718.24x = 702,040 × 279,296.88
  4. Step 4: Simplify right side
    508,718.24x = 196,077,581,635.20
  5. Step 5: Solve for x
    x = 196,077,581,635.20/508,718.24
  6. Step 6: Final answer
    x = 385,434.54

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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.