Home / 219,294.24-302,628.62-128,651.78

Finding the Fourth Proportional to 219,294.24, 302,628.62 and 128,651.78

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Solution

The fourth proportional to 219,294.24, 302,628.62 and 128,651.78 is: 177,540.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,294.24 : 302,628.62 = 128,651.78 : x
  2. Step 2: Convert to fraction form
    219,294.24/302,628.62 = 128,651.78/x
  3. Step 3: Cross multiply
    219,294.24x = 302,628.62 × 128,651.78
  4. Step 4: Simplify right side
    219,294.24x = 38,933,710,641.94
  5. Step 5: Solve for x
    x = 38,933,710,641.94/219,294.24
  6. Step 6: Final answer
    x = 177,540.96

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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.