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Finding the Fourth Proportional to 377,064.82, 520,295.32 and 221,923.90

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Solution

The fourth proportional to 377,064.82, 520,295.32 and 221,923.90 is: 306,223.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,064.82 : 520,295.32 = 221,923.90 : x
  2. Step 2: Convert to fraction form
    377,064.82/520,295.32 = 221,923.90/x
  3. Step 3: Cross multiply
    377,064.82x = 520,295.32 × 221,923.90
  4. Step 4: Simplify right side
    377,064.82x = 115,465,966,566.15
  5. Step 5: Solve for x
    x = 115,465,966,566.15/377,064.82
  6. Step 6: Final answer
    x = 306,223.12

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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.