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Finding the Fourth Proportional to 489,418.79, 734,126.77 and 134,433.15

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Solution

The fourth proportional to 489,418.79, 734,126.77 and 134,433.15 is: 201,649.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,418.79 : 734,126.77 = 134,433.15 : x
  2. Step 2: Convert to fraction form
    489,418.79/734,126.77 = 134,433.15/x
  3. Step 3: Cross multiply
    489,418.79x = 734,126.77 × 134,433.15
  4. Step 4: Simplify right side
    489,418.79x = 98,690,973,518.26
  5. Step 5: Solve for x
    x = 98,690,973,518.26/489,418.79
  6. Step 6: Final answer
    x = 201,649.33

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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.