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Finding the Fourth Proportional to 489,988.50, 734,982.75 and 157,564.50

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Solution

The fourth proportional to 489,988.50, 734,982.75 and 157,564.50 is: 236,346.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,988.50 : 734,982.75 = 157,564.50 : x
  2. Step 2: Convert to fraction form
    489,988.50/734,982.75 = 157,564.50/x
  3. Step 3: Cross multiply
    489,988.50x = 734,982.75 × 157,564.50
  4. Step 4: Simplify right side
    489,988.50x = 115,807,189,512.38
  5. Step 5: Solve for x
    x = 115,807,189,512.38/489,988.50
  6. Step 6: Final answer
    x = 236,346.75

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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.