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Finding the Fourth Proportional to 483,618.06, 667,386.95 and 279,663.30

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Solution

The fourth proportional to 483,618.06, 667,386.95 and 279,663.30 is: 385,931.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,618.06 : 667,386.95 = 279,663.30 : x
  2. Step 2: Convert to fraction form
    483,618.06/667,386.95 = 279,663.30/x
  3. Step 3: Cross multiply
    483,618.06x = 667,386.95 × 279,663.30
  4. Step 4: Simplify right side
    483,618.06x = 186,643,635,415.62
  5. Step 5: Solve for x
    x = 186,643,635,415.62/483,618.06
  6. Step 6: Final answer
    x = 385,931.90

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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.