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Finding the Fourth Proportional to 437,969.21, 656,952.73 and 105,545.21

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Solution

The fourth proportional to 437,969.21, 656,952.73 and 105,545.21 is: 158,317.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,969.21 : 656,952.73 = 105,545.21 : x
  2. Step 2: Convert to fraction form
    437,969.21/656,952.73 = 105,545.21/x
  3. Step 3: Cross multiply
    437,969.21x = 656,952.73 × 105,545.21
  4. Step 4: Simplify right side
    437,969.21x = 69,338,210,299.30
  5. Step 5: Solve for x
    x = 69,338,210,299.30/437,969.21
  6. Step 6: Final answer
    x = 158,317.55

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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.