Home / 211,333.38-291,640.13-115,840.72

Finding the Fourth Proportional to 211,333.38, 291,640.13 and 115,840.72

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Solution

The fourth proportional to 211,333.38, 291,640.13 and 115,840.72 is: 159,860.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,333.38 : 291,640.13 = 115,840.72 : x
  2. Step 2: Convert to fraction form
    211,333.38/291,640.13 = 115,840.72/x
  3. Step 3: Cross multiply
    211,333.38x = 291,640.13 × 115,840.72
  4. Step 4: Simplify right side
    211,333.38x = 33,783,802,060.89
  5. Step 5: Solve for x
    x = 33,783,802,060.89/211,333.38
  6. Step 6: Final answer
    x = 159,860.23

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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.