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Finding the Fourth Proportional to 279,282.72, 385,494.80 and 189,910.56

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Solution

The fourth proportional to 279,282.72, 385,494.80 and 189,910.56 is: 262,134.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,282.72 : 385,494.80 = 189,910.56 : x
  2. Step 2: Convert to fraction form
    279,282.72/385,494.80 = 189,910.56/x
  3. Step 3: Cross multiply
    279,282.72x = 385,494.80 × 189,910.56
  4. Step 4: Simplify right side
    279,282.72x = 73,209,533,345.09
  5. Step 5: Solve for x
    x = 73,209,533,345.09/279,282.72
  6. Step 6: Final answer
    x = 262,134.13

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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.