Home / 215,393.27-297,276.12-129,400.11

Finding the Fourth Proportional to 215,393.27, 297,276.12 and 129,400.11

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Solution

The fourth proportional to 215,393.27, 297,276.12 and 129,400.11 is: 178,592.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,393.27 : 297,276.12 = 129,400.11 : x
  2. Step 2: Convert to fraction form
    215,393.27/297,276.12 = 129,400.11/x
  3. Step 3: Cross multiply
    215,393.27x = 297,276.12 × 129,400.11
  4. Step 4: Simplify right side
    215,393.27x = 38,467,562,628.37
  5. Step 5: Solve for x
    x = 38,467,562,628.37/215,393.27
  6. Step 6: Final answer
    x = 178,592.23

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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.