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Finding the Fourth Proportional to 210,973.38, 316,463.31 and 68,818.02

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Solution

The fourth proportional to 210,973.38, 316,463.31 and 68,818.02 is: 103,228.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,973.38 : 316,463.31 = 68,818.02 : x
  2. Step 2: Convert to fraction form
    210,973.38/316,463.31 = 68,818.02/x
  3. Step 3: Cross multiply
    210,973.38x = 316,463.31 × 68,818.02
  4. Step 4: Simplify right side
    210,973.38x = 21,778,378,396.85
  5. Step 5: Solve for x
    x = 21,778,378,396.85/210,973.38
  6. Step 6: Final answer
    x = 103,228.09

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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.