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Finding the Fourth Proportional to 425,443.15, 638,164.05 and 197,614.18

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Solution

The fourth proportional to 425,443.15, 638,164.05 and 197,614.18 is: 296,420.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,443.15 : 638,164.05 = 197,614.18 : x
  2. Step 2: Convert to fraction form
    425,443.15/638,164.05 = 197,614.18/x
  3. Step 3: Cross multiply
    425,443.15x = 638,164.05 × 197,614.18
  4. Step 4: Simplify right side
    425,443.15x = 126,110,265,446.23
  5. Step 5: Solve for x
    x = 126,110,265,446.23/425,443.15
  6. Step 6: Final answer
    x = 296,420.96

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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.