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Finding the Fourth Proportional to 638,798.97, 958,198.47 and 165,484.38

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Solution

The fourth proportional to 638,798.97, 958,198.47 and 165,484.38 is: 248,226.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,798.97 : 958,198.47 = 165,484.38 : x
  2. Step 2: Convert to fraction form
    638,798.97/958,198.47 = 165,484.38/x
  3. Step 3: Cross multiply
    638,798.97x = 958,198.47 × 165,484.38
  4. Step 4: Simplify right side
    638,798.97x = 158,566,879,724.90
  5. Step 5: Solve for x
    x = 158,566,879,724.90/638,798.97
  6. Step 6: Final answer
    x = 248,226.57

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Double scale
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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.