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Finding the Fourth Proportional to 279,288.39, 385,446.34 and 164,603.96

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Solution

The fourth proportional to 279,288.39, 385,446.34 and 164,603.96 is: 227,170.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,288.39 : 385,446.34 = 164,603.96 : x
  2. Step 2: Convert to fraction form
    279,288.39/385,446.34 = 164,603.96/x
  3. Step 3: Cross multiply
    279,288.39x = 385,446.34 × 164,603.96
  4. Step 4: Simplify right side
    279,288.39x = 63,445,993,655.45
  5. Step 5: Solve for x
    x = 63,445,993,655.45/279,288.39
  6. Step 6: Final answer
    x = 227,170.18

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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.