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Finding the Fourth Proportional to 377,078.48, 520,354.92 and 207,311.28

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Solution

The fourth proportional to 377,078.48, 520,354.92 and 207,311.28 is: 286,082.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,078.48 : 520,354.92 = 207,311.28 : x
  2. Step 2: Convert to fraction form
    377,078.48/520,354.92 = 207,311.28/x
  3. Step 3: Cross multiply
    377,078.48x = 520,354.92 × 207,311.28
  4. Step 4: Simplify right side
    377,078.48x = 107,875,444,519.50
  5. Step 5: Solve for x
    x = 107,875,444,519.50/377,078.48
  6. Step 6: Final answer
    x = 286,082.21

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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.