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Finding the Fourth Proportional to 368,291.91, 552,215.53 and 143,609.25

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Solution

The fourth proportional to 368,291.91, 552,215.53 and 143,609.25 is: 215,327.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,291.91 : 552,215.53 = 143,609.25 : x
  2. Step 2: Convert to fraction form
    368,291.91/552,215.53 = 143,609.25/x
  3. Step 3: Cross multiply
    368,291.91x = 552,215.53 × 143,609.25
  4. Step 4: Simplify right side
    368,291.91x = 79,303,259,544.17
  5. Step 5: Solve for x
    x = 79,303,259,544.17/368,291.91
  6. Step 6: Final answer
    x = 215,327.18

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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.