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Finding the Fourth Proportional to 346,663.80, 520,044.30 and 136,252.80

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Solution

The fourth proportional to 346,663.80, 520,044.30 and 136,252.80 is: 204,398.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,663.80 : 520,044.30 = 136,252.80 : x
  2. Step 2: Convert to fraction form
    346,663.80/520,044.30 = 136,252.80/x
  3. Step 3: Cross multiply
    346,663.80x = 520,044.30 × 136,252.80
  4. Step 4: Simplify right side
    346,663.80x = 70,857,491,999.04
  5. Step 5: Solve for x
    x = 70,857,491,999.04/346,663.80
  6. Step 6: Final answer
    x = 204,398.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.