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Finding the Fourth Proportional to 251,484.64, 347,962.66 and 219,286.40

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Solution

The fourth proportional to 251,484.64, 347,962.66 and 219,286.40 is: 303,412.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,484.64 : 347,962.66 = 219,286.40 : x
  2. Step 2: Convert to fraction form
    251,484.64/347,962.66 = 219,286.40/x
  3. Step 3: Cross multiply
    251,484.64x = 347,962.66 × 219,286.40
  4. Step 4: Simplify right side
    251,484.64x = 76,303,479,045.82
  5. Step 5: Solve for x
    x = 76,303,479,045.82/251,484.64
  6. Step 6: Final answer
    x = 303,412.09

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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.