Home / 217,622.46-300,319.16-122,129.15

Finding the Fourth Proportional to 217,622.46, 300,319.16 and 122,129.15

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Solution

The fourth proportional to 217,622.46, 300,319.16 and 122,129.15 is: 168,538.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,622.46 : 300,319.16 = 122,129.15 : x
  2. Step 2: Convert to fraction form
    217,622.46/300,319.16 = 122,129.15/x
  3. Step 3: Cross multiply
    217,622.46x = 300,319.16 × 122,129.15
  4. Step 4: Simplify right side
    217,622.46x = 36,677,721,627.27
  5. Step 5: Solve for x
    x = 36,677,721,627.27/217,622.46
  6. Step 6: Final answer
    x = 168,538.31

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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.