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Finding the Fourth Proportional to 489,984.80, 734,977.20 and 209,530.40

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Solution

The fourth proportional to 489,984.80, 734,977.20 and 209,530.40 is: 314,295.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,984.80 : 734,977.20 = 209,530.40 : x
  2. Step 2: Convert to fraction form
    489,984.80/734,977.20 = 209,530.40/x
  3. Step 3: Cross multiply
    489,984.80x = 734,977.20 × 209,530.40
  4. Step 4: Simplify right side
    489,984.80x = 154,000,066,706.88
  5. Step 5: Solve for x
    x = 154,000,066,706.88/489,984.80
  6. Step 6: Final answer
    x = 314,295.60

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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.