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Finding the Fourth Proportional to 210,029.70, 315,044.55 and 201,864.90

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Solution

The fourth proportional to 210,029.70, 315,044.55 and 201,864.90 is: 302,797.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,029.70 : 315,044.55 = 201,864.90 : x
  2. Step 2: Convert to fraction form
    210,029.70/315,044.55 = 201,864.90/x
  3. Step 3: Cross multiply
    210,029.70x = 315,044.55 × 201,864.90
  4. Step 4: Simplify right side
    210,029.70x = 63,596,436,581.30
  5. Step 5: Solve for x
    x = 63,596,436,581.30/210,029.70
  6. Step 6: Final answer
    x = 302,797.35

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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.