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Finding the Fourth Proportional to 489,455.80, 734,183.70 and 157,065.40

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Solution

The fourth proportional to 489,455.80, 734,183.70 and 157,065.40 is: 235,598.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,455.80 : 734,183.70 = 157,065.40 : x
  2. Step 2: Convert to fraction form
    489,455.80/734,183.70 = 157,065.40/x
  3. Step 3: Cross multiply
    489,455.80x = 734,183.70 × 157,065.40
  4. Step 4: Simplify right side
    489,455.80x = 115,314,856,513.98
  5. Step 5: Solve for x
    x = 115,314,856,513.98/489,455.80
  6. Step 6: Final answer
    x = 235,598.10

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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.