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Finding the Fourth Proportional to 519,523.56, 779,052.06 and 239,121

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Solution

The fourth proportional to 519,523.56, 779,052.06 and 239,121 is: 358,574.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,523.56 : 779,052.06 = 239,121 : x
  2. Step 2: Convert to fraction form
    519,523.56/779,052.06 = 239,121/x
  3. Step 3: Cross multiply
    519,523.56x = 779,052.06 × 239,121
  4. Step 4: Simplify right side
    519,523.56x = 186,287,707,639.26
  5. Step 5: Solve for x
    x = 186,287,707,639.26/519,523.56
  6. Step 6: Final answer
    x = 358,574.13

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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.