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Finding the Fourth Proportional to 508,736.72, 702,065.46 and 279,315.30

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Solution

The fourth proportional to 508,736.72, 702,065.46 and 279,315.30 is: 385,459.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,736.72 : 702,065.46 = 279,315.30 : x
  2. Step 2: Convert to fraction form
    508,736.72/702,065.46 = 279,315.30/x
  3. Step 3: Cross multiply
    508,736.72x = 702,065.46 × 279,315.30
  4. Step 4: Simplify right side
    508,736.72x = 196,097,624,579.54
  5. Step 5: Solve for x
    x = 196,097,624,579.54/508,736.72
  6. Step 6: Final answer
    x = 385,459.94

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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.