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Finding the Fourth Proportional to 425,400.37, 638,202.38 and 121,798.76

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Solution

The fourth proportional to 425,400.37, 638,202.38 and 121,798.76 is: 182,727.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,400.37 : 638,202.38 = 121,798.76 : x
  2. Step 2: Convert to fraction form
    425,400.37/638,202.38 = 121,798.76/x
  3. Step 3: Cross multiply
    425,400.37x = 638,202.38 × 121,798.76
  4. Step 4: Simplify right side
    425,400.37x = 77,732,254,713.04
  5. Step 5: Solve for x
    x = 77,732,254,713.04/425,400.37
  6. Step 6: Final answer
    x = 182,727.29

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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.