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Finding the Fourth Proportional to 312,817.96, 431,856.28 and 244,690.17

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Solution

The fourth proportional to 312,817.96, 431,856.28 and 244,690.17 is: 337,803.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,817.96 : 431,856.28 = 244,690.17 : x
  2. Step 2: Convert to fraction form
    312,817.96/431,856.28 = 244,690.17/x
  3. Step 3: Cross multiply
    312,817.96x = 431,856.28 × 244,690.17
  4. Step 4: Simplify right side
    312,817.96x = 105,670,986,307.98
  5. Step 5: Solve for x
    x = 105,670,986,307.98/312,817.96
  6. Step 6: Final answer
    x = 337,803.46

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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.