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Finding the Fourth Proportional to 368,818.52, 508,982.13 and 215,870.94

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Solution

The fourth proportional to 368,818.52, 508,982.13 and 215,870.94 is: 297,909.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,818.52 : 508,982.13 = 215,870.94 : x
  2. Step 2: Convert to fraction form
    368,818.52/508,982.13 = 215,870.94/x
  3. Step 3: Cross multiply
    368,818.52x = 508,982.13 × 215,870.94
  4. Step 4: Simplify right side
    368,818.52x = 109,874,450,846.30
  5. Step 5: Solve for x
    x = 109,874,450,846.30/368,818.52
  6. Step 6: Final answer
    x = 297,909.26

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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.