Home / 422,117.40-633,176.10-126,629.40

Finding the Fourth Proportional to 422,117.40, 633,176.10 and 126,629.40

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Solution

The fourth proportional to 422,117.40, 633,176.10 and 126,629.40 is: 189,944.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,117.40 : 633,176.10 = 126,629.40 : x
  2. Step 2: Convert to fraction form
    422,117.40/633,176.10 = 126,629.40/x
  3. Step 3: Cross multiply
    422,117.40x = 633,176.10 × 126,629.40
  4. Step 4: Simplify right side
    422,117.40x = 80,178,709,637.34
  5. Step 5: Solve for x
    x = 80,178,709,637.34/422,117.40
  6. Step 6: Final answer
    x = 189,944.10

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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.