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Finding the Fourth Proportional to 291,612.38, 437,418.56 and 69,996.38

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Solution

The fourth proportional to 291,612.38, 437,418.56 and 69,996.38 is: 104,994.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,612.38 : 437,418.56 = 69,996.38 : x
  2. Step 2: Convert to fraction form
    291,612.38/437,418.56 = 69,996.38/x
  3. Step 3: Cross multiply
    291,612.38x = 437,418.56 × 69,996.38
  4. Step 4: Simplify right side
    291,612.38x = 30,617,713,732.71
  5. Step 5: Solve for x
    x = 30,617,713,732.71/291,612.38
  6. Step 6: Final answer
    x = 104,994.56

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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.