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Finding the Fourth Proportional to 508,472.50, 701,690.16 and 279,033.70

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Solution

The fourth proportional to 508,472.50, 701,690.16 and 279,033.70 is: 385,065.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,472.50 : 701,690.16 = 279,033.70 : x
  2. Step 2: Convert to fraction form
    508,472.50/701,690.16 = 279,033.70/x
  3. Step 3: Cross multiply
    508,472.50x = 701,690.16 × 279,033.70
  4. Step 4: Simplify right side
    508,472.50x = 195,795,201,598.39
  5. Step 5: Solve for x
    x = 195,795,201,598.39/508,472.50
  6. Step 6: Final answer
    x = 385,065.47

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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.