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Finding the Fourth Proportional to 368,433.45, 552,675.69 and 143,719.20

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Solution

The fourth proportional to 368,433.45, 552,675.69 and 143,719.20 is: 215,588.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,433.45 : 552,675.69 = 143,719.20 : x
  2. Step 2: Convert to fraction form
    368,433.45/552,675.69 = 143,719.20/x
  3. Step 3: Cross multiply
    368,433.45x = 552,675.69 × 143,719.20
  4. Step 4: Simplify right side
    368,433.45x = 79,430,108,026.25
  5. Step 5: Solve for x
    x = 79,430,108,026.25/368,433.45
  6. Step 6: Final answer
    x = 215,588.75

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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.