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Finding the Fourth Proportional to 405,379.39, 608,489.82 and 234,934.12

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Solution

The fourth proportional to 405,379.39, 608,489.82 and 234,934.12 is: 352,645.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,379.39 : 608,489.82 = 234,934.12 : x
  2. Step 2: Convert to fraction form
    405,379.39/608,489.82 = 234,934.12/x
  3. Step 3: Cross multiply
    405,379.39x = 608,489.82 × 234,934.12
  4. Step 4: Simplify right side
    405,379.39x = 142,955,018,869.43
  5. Step 5: Solve for x
    x = 142,955,018,869.43/405,379.39
  6. Step 6: Final answer
    x = 352,645.01

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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.