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Finding the Fourth Proportional to 265,587.69, 398,320.77 and 76,044.45

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Solution

The fourth proportional to 265,587.69, 398,320.77 and 76,044.45 is: 114,049.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,587.69 : 398,320.77 = 76,044.45 : x
  2. Step 2: Convert to fraction form
    265,587.69/398,320.77 = 76,044.45/x
  3. Step 3: Cross multiply
    265,587.69x = 398,320.77 × 76,044.45
  4. Step 4: Simplify right side
    265,587.69x = 30,290,083,878.23
  5. Step 5: Solve for x
    x = 30,290,083,878.23/265,587.69
  6. Step 6: Final answer
    x = 114,049.28

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.