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Finding the Fourth Proportional to 354,056.98, 531,306.90 and 143,694.92

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Solution

The fourth proportional to 354,056.98, 531,306.90 and 143,694.92 is: 215,632.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,056.98 : 531,306.90 = 143,694.92 : x
  2. Step 2: Convert to fraction form
    354,056.98/531,306.90 = 143,694.92/x
  3. Step 3: Cross multiply
    354,056.98x = 531,306.90 × 143,694.92
  4. Step 4: Simplify right side
    354,056.98x = 76,346,099,834.41
  5. Step 5: Solve for x
    x = 76,346,099,834.41/354,056.98
  6. Step 6: Final answer
    x = 215,632.24

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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.