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Finding the Fourth Proportional to 508,559.61, 701,821.17 and 279,138.36

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Solution

The fourth proportional to 508,559.61, 701,821.17 and 279,138.36 is: 385,215.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,559.61 : 701,821.17 = 279,138.36 : x
  2. Step 2: Convert to fraction form
    508,559.61/701,821.17 = 279,138.36/x
  3. Step 3: Cross multiply
    508,559.61x = 701,821.17 × 279,138.36
  4. Step 4: Simplify right side
    508,559.61x = 195,905,210,407.08
  5. Step 5: Solve for x
    x = 195,905,210,407.08/508,559.61
  6. Step 6: Final answer
    x = 385,215.83

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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.