Home / 211,140.56-291,378.68-120,494.72

Finding the Fourth Proportional to 211,140.56, 291,378.68 and 120,494.72

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Solution

The fourth proportional to 211,140.56, 291,378.68 and 120,494.72 is: 166,285.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,140.56 : 291,378.68 = 120,494.72 : x
  2. Step 2: Convert to fraction form
    211,140.56/291,378.68 = 120,494.72/x
  3. Step 3: Cross multiply
    211,140.56x = 291,378.68 × 120,494.72
  4. Step 4: Simplify right side
    211,140.56x = 35,109,592,460.57
  5. Step 5: Solve for x
    x = 35,109,592,460.57/211,140.56
  6. Step 6: Final answer
    x = 166,285.40

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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.