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Finding the Fourth Proportional to 368,617.50, 553,014 and 119,299.50

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Solution

The fourth proportional to 368,617.50, 553,014 and 119,299.50 is: 178,977.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,617.50 : 553,014 = 119,299.50 : x
  2. Step 2: Convert to fraction form
    368,617.50/553,014 = 119,299.50/x
  3. Step 3: Cross multiply
    368,617.50x = 553,014 × 119,299.50
  4. Step 4: Simplify right side
    368,617.50x = 65,974,293,693
  5. Step 5: Solve for x
    x = 65,974,293,693/368,617.50
  6. Step 6: Final answer
    x = 178,977.65

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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.