Home / 638,427.20-957,640.64-165,160.32

Finding the Fourth Proportional to 638,427.20, 957,640.64 and 165,160.32

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Solution

The fourth proportional to 638,427.20, 957,640.64 and 165,160.32 is: 247,740.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,427.20 : 957,640.64 = 165,160.32 : x
  2. Step 2: Convert to fraction form
    638,427.20/957,640.64 = 165,160.32/x
  3. Step 3: Cross multiply
    638,427.20x = 957,640.64 × 165,160.32
  4. Step 4: Simplify right side
    638,427.20x = 158,164,234,547.41
  5. Step 5: Solve for x
    x = 158,164,234,547.41/638,427.20
  6. Step 6: Final answer
    x = 247,740.44

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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.