Home / 203,216.51-280,438.74-112,578.36

Finding the Fourth Proportional to 203,216.51, 280,438.74 and 112,578.36

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Solution

The fourth proportional to 203,216.51, 280,438.74 and 112,578.36 is: 155,358.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,216.51 : 280,438.74 = 112,578.36 : x
  2. Step 2: Convert to fraction form
    203,216.51/280,438.74 = 112,578.36/x
  3. Step 3: Cross multiply
    203,216.51x = 280,438.74 × 112,578.36
  4. Step 4: Simplify right side
    203,216.51x = 31,571,333,429.67
  5. Step 5: Solve for x
    x = 31,571,333,429.67/203,216.51
  6. Step 6: Final answer
    x = 155,358.12

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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.