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Finding the Fourth Proportional to 425,717.61, 638,625.83 and 141,433.53

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Solution

The fourth proportional to 425,717.61, 638,625.83 and 141,433.53 is: 212,166.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,717.61 : 638,625.83 = 141,433.53 : x
  2. Step 2: Convert to fraction form
    425,717.61/638,625.83 = 141,433.53/x
  3. Step 3: Cross multiply
    425,717.61x = 638,625.83 × 141,433.53
  4. Step 4: Simplify right side
    425,717.61x = 90,323,104,778.91
  5. Step 5: Solve for x
    x = 90,323,104,778.91/425,717.61
  6. Step 6: Final answer
    x = 212,166.71

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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.