Home / 211,000.19-291,180.75-115,513.04

Finding the Fourth Proportional to 211,000.19, 291,180.75 and 115,513.04

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Solution

The fourth proportional to 211,000.19, 291,180.75 and 115,513.04 is: 159,408.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,000.19 : 291,180.75 = 115,513.04 : x
  2. Step 2: Convert to fraction form
    211,000.19/291,180.75 = 115,513.04/x
  3. Step 3: Cross multiply
    211,000.19x = 291,180.75 × 115,513.04
  4. Step 4: Simplify right side
    211,000.19x = 33,635,173,621.98
  5. Step 5: Solve for x
    x = 33,635,173,621.98/211,000.19
  6. Step 6: Final answer
    x = 159,408.26

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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.