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Finding the Fourth Proportional to 445,021.16, 667,550.16 and 129,478.06

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Solution

The fourth proportional to 445,021.16, 667,550.16 and 129,478.06 is: 194,222.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,021.16 : 667,550.16 = 129,478.06 : x
  2. Step 2: Convert to fraction form
    445,021.16/667,550.16 = 129,478.06/x
  3. Step 3: Cross multiply
    445,021.16x = 667,550.16 × 129,478.06
  4. Step 4: Simplify right side
    445,021.16x = 86,433,099,669.49
  5. Step 5: Solve for x
    x = 86,433,099,669.49/445,021.16
  6. Step 6: Final answer
    x = 194,222.45

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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.