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Finding the Fourth Proportional to 375,407.90, 518,060.22 and 203,321.90

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Solution

The fourth proportional to 375,407.90, 518,060.22 and 203,321.90 is: 280,582.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    375,407.90 : 518,060.22 = 203,321.90 : x
  2. Step 2: Convert to fraction form
    375,407.90/518,060.22 = 203,321.90/x
  3. Step 3: Cross multiply
    375,407.90x = 518,060.22 × 203,321.90
  4. Step 4: Simplify right side
    375,407.90x = 105,332,987,007.11
  5. Step 5: Solve for x
    x = 105,332,987,007.11/375,407.90
  6. Step 6: Final answer
    x = 280,582.77

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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.