Home / 219,364.30-302,694.91-128,687.18

Finding the Fourth Proportional to 219,364.30, 302,694.91 and 128,687.18

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Solution

The fourth proportional to 219,364.30, 302,694.91 and 128,687.18 is: 177,571.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,364.30 : 302,694.91 = 128,687.18 : x
  2. Step 2: Convert to fraction form
    219,364.30/302,694.91 = 128,687.18/x
  3. Step 3: Cross multiply
    219,364.30x = 302,694.91 × 128,687.18
  4. Step 4: Simplify right side
    219,364.30x = 38,952,953,724.82
  5. Step 5: Solve for x
    x = 38,952,953,724.82/219,364.30
  6. Step 6: Final answer
    x = 177,571.98

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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.