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Finding the Fourth Proportional to 395,178.75, 592,768.13 and 145,860.75

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Solution

The fourth proportional to 395,178.75, 592,768.13 and 145,860.75 is: 218,791.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,178.75 : 592,768.13 = 145,860.75 : x
  2. Step 2: Convert to fraction form
    395,178.75/592,768.13 = 145,860.75/x
  3. Step 3: Cross multiply
    395,178.75x = 592,768.13 × 145,860.75
  4. Step 4: Simplify right side
    395,178.75x = 86,461,603,288.59
  5. Step 5: Solve for x
    x = 86,461,603,288.59/395,178.75
  6. Step 6: Final answer
    x = 218,791.13

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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.