Home / 217,624.38-300,316.59-122,128.62

Finding the Fourth Proportional to 217,624.38, 300,316.59 and 122,128.62

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Solution

The fourth proportional to 217,624.38, 300,316.59 and 122,128.62 is: 168,534.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,624.38 : 300,316.59 = 122,128.62 : x
  2. Step 2: Convert to fraction form
    217,624.38/300,316.59 = 122,128.62/x
  3. Step 3: Cross multiply
    217,624.38x = 300,316.59 × 122,128.62
  4. Step 4: Simplify right side
    217,624.38x = 36,677,250,699.81
  5. Step 5: Solve for x
    x = 36,677,250,699.81/217,624.38
  6. Step 6: Final answer
    x = 168,534.66

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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.