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Finding the Fourth Proportional to 312,817.39, 431,855.50 and 244,689.61

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Solution

The fourth proportional to 312,817.39, 431,855.50 and 244,689.61 is: 337,802.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,817.39 : 431,855.50 = 244,689.61 : x
  2. Step 2: Convert to fraction form
    312,817.39/431,855.50 = 244,689.61/x
  3. Step 3: Cross multiply
    312,817.39x = 431,855.50 × 244,689.61
  4. Step 4: Simplify right side
    312,817.39x = 105,670,553,448.51
  5. Step 5: Solve for x
    x = 105,670,553,448.51/312,817.39
  6. Step 6: Final answer
    x = 337,802.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.