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Finding the Fourth Proportional to 382,367.79, 573,428.90 and 126,142.77

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Solution

The fourth proportional to 382,367.79, 573,428.90 and 126,142.77 is: 189,173.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    382,367.79 : 573,428.90 = 126,142.77 : x
  2. Step 2: Convert to fraction form
    382,367.79/573,428.90 = 126,142.77/x
  3. Step 3: Cross multiply
    382,367.79x = 573,428.90 × 126,142.77
  4. Step 4: Simplify right side
    382,367.79x = 72,333,906,346.19
  5. Step 5: Solve for x
    x = 72,333,906,346.19/382,367.79
  6. Step 6: Final answer
    x = 189,173.64

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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.