Home / 211,321.31-291,622.80-115,827.71

Finding the Fourth Proportional to 211,321.31, 291,622.80 and 115,827.71

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Solution

The fourth proportional to 211,321.31, 291,622.80 and 115,827.71 is: 159,841.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,321.31 : 291,622.80 = 115,827.71 : x
  2. Step 2: Convert to fraction form
    211,321.31/291,622.80 = 115,827.71/x
  3. Step 3: Cross multiply
    211,321.31x = 291,622.80 × 115,827.71
  4. Step 4: Simplify right side
    211,321.31x = 33,778,001,107.79
  5. Step 5: Solve for x
    x = 33,778,001,107.79/211,321.31
  6. Step 6: Final answer
    x = 159,841.91

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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.