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Finding the Fourth Proportional to 520,066.20, 779,580.90 and 239,093.40

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Solution

The fourth proportional to 520,066.20, 779,580.90 and 239,093.40 is: 358,401.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,066.20 : 779,580.90 = 239,093.40 : x
  2. Step 2: Convert to fraction form
    520,066.20/779,580.90 = 239,093.40/x
  3. Step 3: Cross multiply
    520,066.20x = 779,580.90 × 239,093.40
  4. Step 4: Simplify right side
    520,066.20x = 186,392,647,956.06
  5. Step 5: Solve for x
    x = 186,392,647,956.06/520,066.20
  6. Step 6: Final answer
    x = 358,401.77

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.