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Finding the Fourth Proportional to 389,158.20, 583,754.76 and 119,266.56

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Solution

The fourth proportional to 389,158.20, 583,754.76 and 119,266.56 is: 178,905.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,158.20 : 583,754.76 = 119,266.56 : x
  2. Step 2: Convert to fraction form
    389,158.20/583,754.76 = 119,266.56/x
  3. Step 3: Cross multiply
    389,158.20x = 583,754.76 × 119,266.56
  4. Step 4: Simplify right side
    389,158.20x = 69,622,422,108.83
  5. Step 5: Solve for x
    x = 69,622,422,108.83/389,158.20
  6. Step 6: Final answer
    x = 178,905.19

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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.