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Finding the Fourth Proportional to 368,121.64, 552,100.38 and 143,488.12

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Solution

The fourth proportional to 368,121.64, 552,100.38 and 143,488.12 is: 215,200.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,121.64 : 552,100.38 = 143,488.12 : x
  2. Step 2: Convert to fraction form
    368,121.64/552,100.38 = 143,488.12/x
  3. Step 3: Cross multiply
    368,121.64x = 552,100.38 × 143,488.12
  4. Step 4: Simplify right side
    368,121.64x = 79,219,845,577.49
  5. Step 5: Solve for x
    x = 79,219,845,577.49/368,121.64
  6. Step 6: Final answer
    x = 215,200.19

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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.