Home / 217,686.96-300,405.51-122,191.20

Finding the Fourth Proportional to 217,686.96, 300,405.51 and 122,191.20

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Solution

The fourth proportional to 217,686.96, 300,405.51 and 122,191.20 is: 168,622.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,686.96 : 300,405.51 = 122,191.20 : x
  2. Step 2: Convert to fraction form
    217,686.96/300,405.51 = 122,191.20/x
  3. Step 3: Cross multiply
    217,686.96x = 300,405.51 × 122,191.20
  4. Step 4: Simplify right side
    217,686.96x = 36,706,909,753.51
  5. Step 5: Solve for x
    x = 36,706,909,753.51/217,686.96
  6. Step 6: Final answer
    x = 168,622.46

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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.