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Finding the Fourth Proportional to 456,680.40, 685,020.60 and 207,362.40

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Solution

The fourth proportional to 456,680.40, 685,020.60 and 207,362.40 is: 311,043.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    456,680.40 : 685,020.60 = 207,362.40 : x
  2. Step 2: Convert to fraction form
    456,680.40/685,020.60 = 207,362.40/x
  3. Step 3: Cross multiply
    456,680.40x = 685,020.60 × 207,362.40
  4. Step 4: Simplify right side
    456,680.40x = 142,047,515,665.44
  5. Step 5: Solve for x
    x = 142,047,515,665.44/456,680.40
  6. Step 6: Final answer
    x = 311,043.60

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Similar ratio
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1.5x scale

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.