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Finding the Fourth Proportional to 489,553.32, 734,188.70 and 134,578.92

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Solution

The fourth proportional to 489,553.32, 734,188.70 and 134,578.92 is: 201,829.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,553.32 : 734,188.70 = 134,578.92 : x
  2. Step 2: Convert to fraction form
    489,553.32/734,188.70 = 134,578.92/x
  3. Step 3: Cross multiply
    489,553.32x = 734,188.70 × 134,578.92
  4. Step 4: Simplify right side
    489,553.32x = 98,806,322,322.20
  5. Step 5: Solve for x
    x = 98,806,322,322.20/489,553.32
  6. Step 6: Final answer
    x = 201,829.54

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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.