Home / 219,391.47-302,663.79-128,701.44

Finding the Fourth Proportional to 219,391.47, 302,663.79 and 128,701.44

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Solution

The fourth proportional to 219,391.47, 302,663.79 and 128,701.44 is: 177,551.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,391.47 : 302,663.79 = 128,701.44 : x
  2. Step 2: Convert to fraction form
    219,391.47/302,663.79 = 128,701.44/x
  3. Step 3: Cross multiply
    219,391.47x = 302,663.79 × 128,701.44
  4. Step 4: Simplify right side
    219,391.47x = 38,953,265,608.86
  5. Step 5: Solve for x
    x = 38,953,265,608.86/219,391.47
  6. Step 6: Final answer
    x = 177,551.41

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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.