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Finding the Fourth Proportional to 279,349, 385,434.39 and 164,632.21

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Solution

The fourth proportional to 279,349, 385,434.39 and 164,632.21 is: 227,152.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,349 : 385,434.39 = 164,632.21 : x
  2. Step 2: Convert to fraction form
    279,349/385,434.39 = 164,632.21/x
  3. Step 3: Cross multiply
    279,349x = 385,434.39 × 164,632.21
  4. Step 4: Simplify right side
    279,349x = 63,454,915,435.70
  5. Step 5: Solve for x
    x = 63,454,915,435.70/279,349
  6. Step 6: Final answer
    x = 227,152.83

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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.