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Finding the Fourth Proportional to 282,408.50, 389,723.73 and 155,086.22

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Solution

The fourth proportional to 282,408.50, 389,723.73 and 155,086.22 is: 214,018.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,408.50 : 389,723.73 = 155,086.22 : x
  2. Step 2: Convert to fraction form
    282,408.50/389,723.73 = 155,086.22/x
  3. Step 3: Cross multiply
    282,408.50x = 389,723.73 × 155,086.22
  4. Step 4: Simplify right side
    282,408.50x = 60,440,780,130.00
  5. Step 5: Solve for x
    x = 60,440,780,130.00/282,408.50
  6. Step 6: Final answer
    x = 214,018.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.