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Finding the Fourth Proportional to 508,579.45, 701,840.51 and 279,138.24

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Solution

The fourth proportional to 508,579.45, 701,840.51 and 279,138.24 is: 385,211.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,579.45 : 701,840.51 = 279,138.24 : x
  2. Step 2: Convert to fraction form
    508,579.45/701,840.51 = 279,138.24/x
  3. Step 3: Cross multiply
    508,579.45x = 701,840.51 × 279,138.24
  4. Step 4: Simplify right side
    508,579.45x = 195,910,524,722.10
  5. Step 5: Solve for x
    x = 195,910,524,722.10/508,579.45
  6. Step 6: Final answer
    x = 385,211.25

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1.5x scale

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.