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Finding the Fourth Proportional to 425,457.70, 638,262.46 and 141,165.31

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Solution

The fourth proportional to 425,457.70, 638,262.46 and 141,165.31 is: 211,773.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,457.70 : 638,262.46 = 141,165.31 : x
  2. Step 2: Convert to fraction form
    425,457.70/638,262.46 = 141,165.31/x
  3. Step 3: Cross multiply
    425,457.70x = 638,262.46 × 141,165.31
  4. Step 4: Simplify right side
    425,457.70x = 90,100,519,638.32
  5. Step 5: Solve for x
    x = 90,100,519,638.32/425,457.70
  6. Step 6: Final answer
    x = 211,773.15

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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.