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Finding the Fourth Proportional to 368,151.09, 552,089.90 and 128,203.37

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Solution

The fourth proportional to 368,151.09, 552,089.90 and 128,203.37 is: 192,257.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,151.09 : 552,089.90 = 128,203.37 : x
  2. Step 2: Convert to fraction form
    368,151.09/552,089.90 = 128,203.37/x
  3. Step 3: Cross multiply
    368,151.09x = 552,089.90 × 128,203.37
  4. Step 4: Simplify right side
    368,151.09x = 70,779,787,423.70
  5. Step 5: Solve for x
    x = 70,779,787,423.70/368,151.09
  6. Step 6: Final answer
    x = 192,257.44

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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.