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Finding the Fourth Proportional to 361,962.64, 499,521.79 and 218,695

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Solution

The fourth proportional to 361,962.64, 499,521.79 and 218,695 is: 301,807.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    361,962.64 : 499,521.79 = 218,695 : x
  2. Step 2: Convert to fraction form
    361,962.64/499,521.79 = 218,695/x
  3. Step 3: Cross multiply
    361,962.64x = 499,521.79 × 218,695
  4. Step 4: Simplify right side
    361,962.64x = 109,242,917,864.05
  5. Step 5: Solve for x
    x = 109,242,917,864.05/361,962.64
  6. Step 6: Final answer
    x = 301,807.16

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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.