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Finding the Fourth Proportional to 425,729.04, 638,596.08 and 126,212.22

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Solution

The fourth proportional to 425,729.04, 638,596.08 and 126,212.22 is: 189,319.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,729.04 : 638,596.08 = 126,212.22 : x
  2. Step 2: Convert to fraction form
    425,729.04/638,596.08 = 126,212.22/x
  3. Step 3: Cross multiply
    425,729.04x = 638,596.08 × 126,212.22
  4. Step 4: Simplify right side
    425,729.04x = 80,598,628,940.10
  5. Step 5: Solve for x
    x = 80,598,628,940.10/425,729.04
  6. Step 6: Final answer
    x = 189,319.08

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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.