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Finding the Fourth Proportional to 489,706.60, 734,559.90 and 157,316.20

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Solution

The fourth proportional to 489,706.60, 734,559.90 and 157,316.20 is: 235,974.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,706.60 : 734,559.90 = 157,316.20 : x
  2. Step 2: Convert to fraction form
    489,706.60/734,559.90 = 157,316.20/x
  3. Step 3: Cross multiply
    489,706.60x = 734,559.90 × 157,316.20
  4. Step 4: Simplify right side
    489,706.60x = 115,558,172,140.38
  5. Step 5: Solve for x
    x = 115,558,172,140.38/489,706.60
  6. Step 6: Final answer
    x = 235,974.30

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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.