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Finding the Fourth Proportional to 377,390.25, 520,798.55 and 207,620.73

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Solution

The fourth proportional to 377,390.25, 520,798.55 and 207,620.73 is: 286,516.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,390.25 : 520,798.55 = 207,620.73 : x
  2. Step 2: Convert to fraction form
    377,390.25/520,798.55 = 207,620.73/x
  3. Step 3: Cross multiply
    377,390.25x = 520,798.55 × 207,620.73
  4. Step 4: Simplify right side
    377,390.25x = 108,128,574,095.84
  5. Step 5: Solve for x
    x = 108,128,574,095.84/377,390.25
  6. Step 6: Final answer
    x = 286,516.61

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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.