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Finding the Fourth Proportional to 312,295.30, 468,372.81 and 143,653.65

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Solution

The fourth proportional to 312,295.30, 468,372.81 and 143,653.65 is: 215,448.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,295.30 : 468,372.81 = 143,653.65 : x
  2. Step 2: Convert to fraction form
    312,295.30/468,372.81 = 143,653.65/x
  3. Step 3: Cross multiply
    312,295.30x = 468,372.81 × 143,653.65
  4. Step 4: Simplify right side
    312,295.30x = 67,283,463,717.26
  5. Step 5: Solve for x
    x = 67,283,463,717.26/312,295.30
  6. Step 6: Final answer
    x = 215,448.21

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1.5x scale

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.