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Finding the Fourth Proportional to 386,804.70, 580,207.05 and 245,087.10

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Solution

The fourth proportional to 386,804.70, 580,207.05 and 245,087.10 is: 367,630.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,804.70 : 580,207.05 = 245,087.10 : x
  2. Step 2: Convert to fraction form
    386,804.70/580,207.05 = 245,087.10/x
  3. Step 3: Cross multiply
    386,804.70x = 580,207.05 × 245,087.10
  4. Step 4: Simplify right side
    386,804.70x = 142,201,263,284.06
  5. Step 5: Solve for x
    x = 142,201,263,284.06/386,804.70
  6. Step 6: Final answer
    x = 367,630.65

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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.