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Finding the Fourth Proportional to 520,098.70, 779,629.65 and 239,125.90

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Solution

The fourth proportional to 520,098.70, 779,629.65 and 239,125.90 is: 358,450.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,098.70 : 779,629.65 = 239,125.90 : x
  2. Step 2: Convert to fraction form
    520,098.70/779,629.65 = 239,125.90/x
  3. Step 3: Cross multiply
    520,098.70x = 779,629.65 × 239,125.90
  4. Step 4: Simplify right side
    520,098.70x = 186,429,641,722.94
  5. Step 5: Solve for x
    x = 186,429,641,722.94/520,098.70
  6. Step 6: Final answer
    x = 358,450.51

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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.