Home / 219,288.88-302,586.08-128,610.64

Finding the Fourth Proportional to 219,288.88, 302,586.08 and 128,610.64

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Solution

The fourth proportional to 219,288.88, 302,586.08 and 128,610.64 is: 177,463.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,288.88 : 302,586.08 = 128,610.64 : x
  2. Step 2: Convert to fraction form
    219,288.88/302,586.08 = 128,610.64/x
  3. Step 3: Cross multiply
    219,288.88x = 302,586.08 × 128,610.64
  4. Step 4: Simplify right side
    219,288.88x = 38,915,789,403.89
  5. Step 5: Solve for x
    x = 38,915,789,403.89/219,288.88
  6. Step 6: Final answer
    x = 177,463.58

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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.