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Finding the Fourth Proportional to 489,627.34, 734,445.10 and 134,660.82

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Solution

The fourth proportional to 489,627.34, 734,445.10 and 134,660.82 is: 201,992.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,627.34 : 734,445.10 = 134,660.82 : x
  2. Step 2: Convert to fraction form
    489,627.34/734,445.10 = 134,660.82/x
  3. Step 3: Cross multiply
    489,627.34x = 734,445.10 × 134,660.82
  4. Step 4: Simplify right side
    489,627.34x = 98,900,979,410.98
  5. Step 5: Solve for x
    x = 98,900,979,410.98/489,627.34
  6. Step 6: Final answer
    x = 201,992.35

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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.