Home / 219,265.78-302,554.42-128,587.50

Finding the Fourth Proportional to 219,265.78, 302,554.42 and 128,587.50

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Solution

The fourth proportional to 219,265.78, 302,554.42 and 128,587.50 is: 177,431.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,265.78 : 302,554.42 = 128,587.50 : x
  2. Step 2: Convert to fraction form
    219,265.78/302,554.42 = 128,587.50/x
  3. Step 3: Cross multiply
    219,265.78x = 302,554.42 × 128,587.50
  4. Step 4: Simplify right side
    219,265.78x = 38,904,716,481.75
  5. Step 5: Solve for x
    x = 38,904,716,481.75/219,265.78
  6. Step 6: Final answer
    x = 177,431.77

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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.