Home / 211,013.69-291,198.90-115,520.40

Finding the Fourth Proportional to 211,013.69, 291,198.90 and 115,520.40

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Solution

The fourth proportional to 211,013.69, 291,198.90 and 115,520.40 is: 159,418.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,013.69 : 291,198.90 = 115,520.40 : x
  2. Step 2: Convert to fraction form
    211,013.69/291,198.90 = 115,520.40/x
  3. Step 3: Cross multiply
    211,013.69x = 291,198.90 × 115,520.40
  4. Step 4: Simplify right side
    211,013.69x = 33,639,411,373.96
  5. Step 5: Solve for x
    x = 33,639,411,373.96/211,013.69
  6. Step 6: Final answer
    x = 159,418.15

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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.