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Finding the Fourth Proportional to 356,245, 491,621.36 and 243,065.32

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Solution

The fourth proportional to 356,245, 491,621.36 and 243,065.32 is: 335,432.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,245 : 491,621.36 = 243,065.32 : x
  2. Step 2: Convert to fraction form
    356,245/491,621.36 = 243,065.32/x
  3. Step 3: Cross multiply
    356,245x = 491,621.36 × 243,065.32
  4. Step 4: Simplify right side
    356,245x = 119,496,103,187.24
  5. Step 5: Solve for x
    x = 119,496,103,187.24/356,245
  6. Step 6: Final answer
    x = 335,432.37

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.