Home / 377,540.16-521,009.10-207,778.20

Finding the Fourth Proportional to 377,540.16, 521,009.10 and 207,778.20

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Solution

The fourth proportional to 377,540.16, 521,009.10 and 207,778.20 is: 286,735.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,540.16 : 521,009.10 = 207,778.20 : x
  2. Step 2: Convert to fraction form
    377,540.16/521,009.10 = 207,778.20/x
  3. Step 3: Cross multiply
    377,540.16x = 521,009.10 × 207,778.20
  4. Step 4: Simplify right side
    377,540.16x = 108,254,332,981.62
  5. Step 5: Solve for x
    x = 108,254,332,981.62/377,540.16
  6. Step 6: Final answer
    x = 286,735.94

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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.