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Finding the Fourth Proportional to 219,609.74, 303,048.86 and 121,487.12

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Solution

The fourth proportional to 219,609.74, 303,048.86 and 121,487.12 is: 167,645.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,609.74 : 303,048.86 = 121,487.12 : x
  2. Step 2: Convert to fraction form
    219,609.74/303,048.86 = 121,487.12/x
  3. Step 3: Cross multiply
    219,609.74x = 303,048.86 × 121,487.12
  4. Step 4: Simplify right side
    219,609.74x = 36,816,531,098.00
  5. Step 5: Solve for x
    x = 36,816,531,098.00/219,609.74
  6. Step 6: Final answer
    x = 167,645.26

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1.5x scale

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.