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Finding the Fourth Proportional to 489,495.88, 734,251.92 and 134,507.71

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Solution

The fourth proportional to 489,495.88, 734,251.92 and 134,507.71 is: 201,763.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,495.88 : 734,251.92 = 134,507.71 : x
  2. Step 2: Convert to fraction form
    489,495.88/734,251.92 = 134,507.71/x
  3. Step 3: Cross multiply
    489,495.88x = 734,251.92 × 134,507.71
  4. Step 4: Simplify right side
    489,495.88x = 98,762,544,322.30
  5. Step 5: Solve for x
    x = 98,762,544,322.30/489,495.88
  6. Step 6: Final answer
    x = 201,763.79

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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.