Home / 219,726.75-303,186.47-138,042.30

Finding the Fourth Proportional to 219,726.75, 303,186.47 and 138,042.30

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Solution

The fourth proportional to 219,726.75, 303,186.47 and 138,042.30 is: 190,475.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,726.75 : 303,186.47 = 138,042.30 : x
  2. Step 2: Convert to fraction form
    219,726.75/303,186.47 = 138,042.30/x
  3. Step 3: Cross multiply
    219,726.75x = 303,186.47 × 138,042.30
  4. Step 4: Simplify right side
    219,726.75x = 41,852,556,957.47
  5. Step 5: Solve for x
    x = 41,852,556,957.47/219,726.75
  6. Step 6: Final answer
    x = 190,475.47

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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.