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Finding the Fourth Proportional to 489,495.38, 734,251.17 and 134,507.21

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Solution

The fourth proportional to 489,495.38, 734,251.17 and 134,507.21 is: 201,763.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,495.38 : 734,251.17 = 134,507.21 : x
  2. Step 2: Convert to fraction form
    489,495.38/734,251.17 = 134,507.21/x
  3. Step 3: Cross multiply
    489,495.38x = 734,251.17 × 134,507.21
  4. Step 4: Simplify right side
    489,495.38x = 98,762,076,315.94
  5. Step 5: Solve for x
    x = 98,762,076,315.94/489,495.38
  6. Step 6: Final answer
    x = 201,763.04

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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.