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Finding the Fourth Proportional to 456,700.40, 685,050.60 and 207,382.40

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Solution

The fourth proportional to 456,700.40, 685,050.60 and 207,382.40 is: 311,073.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    456,700.40 : 685,050.60 = 207,382.40 : x
  2. Step 2: Convert to fraction form
    456,700.40/685,050.60 = 207,382.40/x
  3. Step 3: Cross multiply
    456,700.40x = 685,050.60 × 207,382.40
  4. Step 4: Simplify right side
    456,700.40x = 142,067,437,549.44
  5. Step 5: Solve for x
    x = 142,067,437,549.44/456,700.40
  6. Step 6: Final answer
    x = 311,073.60

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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.