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Finding the Fourth Proportional to 545,356.34, 818,408.20 and 190,370.42

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Solution

The fourth proportional to 545,356.34, 818,408.20 and 190,370.42 is: 285,686.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,356.34 : 818,408.20 = 190,370.42 : x
  2. Step 2: Convert to fraction form
    545,356.34/818,408.20 = 190,370.42/x
  3. Step 3: Cross multiply
    545,356.34x = 818,408.20 × 190,370.42
  4. Step 4: Simplify right side
    545,356.34x = 155,800,712,765.44
  5. Step 5: Solve for x
    x = 155,800,712,765.44/545,356.34
  6. Step 6: Final answer
    x = 285,686.08

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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.