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Finding the Fourth Proportional to 279,434.66, 384,765.88 and 210,624.10

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Solution

The fourth proportional to 279,434.66, 384,765.88 and 210,624.10 is: 290,017.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,434.66 : 384,765.88 = 210,624.10 : x
  2. Step 2: Convert to fraction form
    279,434.66/384,765.88 = 210,624.10/x
  3. Step 3: Cross multiply
    279,434.66x = 384,765.88 × 210,624.10
  4. Step 4: Simplify right side
    279,434.66x = 81,040,967,185.71
  5. Step 5: Solve for x
    x = 81,040,967,185.71/279,434.66
  6. Step 6: Final answer
    x = 290,017.59

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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.