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Finding the Fourth Proportional to 279,018.24, 418,464.24 and 79,334.28

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Solution

The fourth proportional to 279,018.24, 418,464.24 and 79,334.28 is: 118,983.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,018.24 : 418,464.24 = 79,334.28 : x
  2. Step 2: Convert to fraction form
    279,018.24/418,464.24 = 79,334.28/x
  3. Step 3: Cross multiply
    279,018.24x = 418,464.24 × 79,334.28
  4. Step 4: Simplify right side
    279,018.24x = 33,198,559,186.15
  5. Step 5: Solve for x
    x = 33,198,559,186.15/279,018.24
  6. Step 6: Final answer
    x = 118,983.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.