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Finding the Fourth Proportional to 520,093.70, 779,622.15 and 239,120.90

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Solution

The fourth proportional to 520,093.70, 779,622.15 and 239,120.90 is: 358,443.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,093.70 : 779,622.15 = 239,120.90 : x
  2. Step 2: Convert to fraction form
    520,093.70/779,622.15 = 239,120.90/x
  3. Step 3: Cross multiply
    520,093.70x = 779,622.15 × 239,120.90
  4. Step 4: Simplify right side
    520,093.70x = 186,423,950,167.94
  5. Step 5: Solve for x
    x = 186,423,950,167.94/520,093.70
  6. Step 6: Final answer
    x = 358,443.01

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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.