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Finding the Fourth Proportional to 377,359, 520,330.26 and 291,121.72

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Solution

The fourth proportional to 377,359, 520,330.26 and 291,121.72 is: 401,419.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,359 : 520,330.26 = 291,121.72 : x
  2. Step 2: Convert to fraction form
    377,359/520,330.26 = 291,121.72/x
  3. Step 3: Cross multiply
    377,359x = 520,330.26 × 291,121.72
  4. Step 4: Simplify right side
    377,359x = 151,479,440,259.25
  5. Step 5: Solve for x
    x = 151,479,440,259.25/377,359
  6. Step 6: Final answer
    x = 401,419.97

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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.