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Finding the Fourth Proportional to 312,797.70, 469,196.55 and 144,317.70

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Solution

The fourth proportional to 312,797.70, 469,196.55 and 144,317.70 is: 216,476.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,797.70 : 469,196.55 = 144,317.70 : x
  2. Step 2: Convert to fraction form
    312,797.70/469,196.55 = 144,317.70/x
  3. Step 3: Cross multiply
    312,797.70x = 469,196.55 × 144,317.70
  4. Step 4: Simplify right side
    312,797.70x = 67,713,366,943.94
  5. Step 5: Solve for x
    x = 67,713,366,943.94/312,797.70
  6. Step 6: Final answer
    x = 216,476.55

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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.