Home / 217,578.19-326,382.55-91,090.77

Finding the Fourth Proportional to 217,578.19, 326,382.55 and 91,090.77

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Solution

The fourth proportional to 217,578.19, 326,382.55 and 91,090.77 is: 136,642.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,578.19 : 326,382.55 = 91,090.77 : x
  2. Step 2: Convert to fraction form
    217,578.19/326,382.55 = 91,090.77/x
  3. Step 3: Cross multiply
    217,578.19x = 326,382.55 × 91,090.77
  4. Step 4: Simplify right side
    217,578.19x = 29,730,437,794.06
  5. Step 5: Solve for x
    x = 29,730,437,794.06/217,578.19
  6. Step 6: Final answer
    x = 136,642.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.