Home / 219,087.46-302,391.14-128,472.62

Finding the Fourth Proportional to 219,087.46, 302,391.14 and 128,472.62

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Solution

The fourth proportional to 219,087.46, 302,391.14 and 128,472.62 is: 177,321.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,087.46 : 302,391.14 = 128,472.62 : x
  2. Step 2: Convert to fraction form
    219,087.46/302,391.14 = 128,472.62/x
  3. Step 3: Cross multiply
    219,087.46x = 302,391.14 × 128,472.62
  4. Step 4: Simplify right side
    219,087.46x = 38,848,980,829.81
  5. Step 5: Solve for x
    x = 38,848,980,829.81/219,087.46
  6. Step 6: Final answer
    x = 177,321.79

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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.