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Finding the Fourth Proportional to 439,718.88, 606,725.80 and 276,280.71

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Solution

The fourth proportional to 439,718.88, 606,725.80 and 276,280.71 is: 381,213.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,718.88 : 606,725.80 = 276,280.71 : x
  2. Step 2: Convert to fraction form
    439,718.88/606,725.80 = 276,280.71/x
  3. Step 3: Cross multiply
    439,718.88x = 606,725.80 × 276,280.71
  4. Step 4: Simplify right side
    439,718.88x = 167,626,631,833.39
  5. Step 5: Solve for x
    x = 167,626,631,833.39/439,718.88
  6. Step 6: Final answer
    x = 381,213.18

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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.