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Finding the Fourth Proportional to 368,408.40, 552,590.04 and 216,689.38

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Solution

The fourth proportional to 368,408.40, 552,590.04 and 216,689.38 is: 325,020.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,408.40 : 552,590.04 = 216,689.38 : x
  2. Step 2: Convert to fraction form
    368,408.40/552,590.04 = 216,689.38/x
  3. Step 3: Cross multiply
    368,408.40x = 552,590.04 × 216,689.38
  4. Step 4: Simplify right side
    368,408.40x = 119,740,393,161.78
  5. Step 5: Solve for x
    x = 119,740,393,161.78/368,408.40
  6. Step 6: Final answer
    x = 325,020.80

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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.