Home / 356,218.81-534,363.86-131,638.21

Finding the Fourth Proportional to 356,218.81, 534,363.86 and 131,638.21

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Solution

The fourth proportional to 356,218.81, 534,363.86 and 131,638.21 is: 197,470.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,218.81 : 534,363.86 = 131,638.21 : x
  2. Step 2: Convert to fraction form
    356,218.81/534,363.86 = 131,638.21/x
  3. Step 3: Cross multiply
    356,218.81x = 534,363.86 × 131,638.21
  4. Step 4: Simplify right side
    356,218.81x = 70,342,701,360.90
  5. Step 5: Solve for x
    x = 70,342,701,360.90/356,218.81
  6. Step 6: Final answer
    x = 197,470.49

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1.5x scale

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.