Home / 219,128.29-302,399.22-128,537.89

Finding the Fourth Proportional to 219,128.29, 302,399.22 and 128,537.89

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Solution

The fourth proportional to 219,128.29, 302,399.22 and 128,537.89 is: 177,383.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,128.29 : 302,399.22 = 128,537.89 : x
  2. Step 2: Convert to fraction form
    219,128.29/302,399.22 = 128,537.89/x
  3. Step 3: Cross multiply
    219,128.29x = 302,399.22 × 128,537.89
  4. Step 4: Simplify right side
    219,128.29x = 38,869,757,402.46
  5. Step 5: Solve for x
    x = 38,869,757,402.46/219,128.29
  6. Step 6: Final answer
    x = 177,383.57

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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.