Home / 215,701.71-297,580.68-143,138.82

Finding the Fourth Proportional to 215,701.71, 297,580.68 and 143,138.82

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Solution

The fourth proportional to 215,701.71, 297,580.68 and 143,138.82 is: 197,473.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,701.71 : 297,580.68 = 143,138.82 : x
  2. Step 2: Convert to fraction form
    215,701.71/297,580.68 = 143,138.82/x
  3. Step 3: Cross multiply
    215,701.71x = 297,580.68 × 143,138.82
  4. Step 4: Simplify right side
    215,701.71x = 42,595,347,390.00
  5. Step 5: Solve for x
    x = 42,595,347,390.00/215,701.71
  6. Step 6: Final answer
    x = 197,473.39

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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.