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Finding the Fourth Proportional to 489,989.50, 734,984.25 and 157,565.50

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Solution

The fourth proportional to 489,989.50, 734,984.25 and 157,565.50 is: 236,348.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,989.50 : 734,984.25 = 157,565.50 : x
  2. Step 2: Convert to fraction form
    489,989.50/734,984.25 = 157,565.50/x
  3. Step 3: Cross multiply
    489,989.50x = 734,984.25 × 157,565.50
  4. Step 4: Simplify right side
    489,989.50x = 115,808,160,843.38
  5. Step 5: Solve for x
    x = 115,808,160,843.38/489,989.50
  6. Step 6: Final answer
    x = 236,348.25

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Similar ratio
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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.