Home / 211,400.18-291,732.25-115,907.54

Finding the Fourth Proportional to 211,400.18, 291,732.25 and 115,907.54

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Solution

The fourth proportional to 211,400.18, 291,732.25 and 115,907.54 is: 159,952.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,400.18 : 291,732.25 = 115,907.54 : x
  2. Step 2: Convert to fraction form
    211,400.18/291,732.25 = 115,907.54/x
  3. Step 3: Cross multiply
    211,400.18x = 291,732.25 × 115,907.54
  4. Step 4: Simplify right side
    211,400.18x = 33,813,967,436.17
  5. Step 5: Solve for x
    x = 33,813,967,436.17/211,400.18
  6. Step 6: Final answer
    x = 159,952.41

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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.