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Finding the Fourth Proportional to 426,951.17, 640,531.87 and 300,837.71

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Solution

The fourth proportional to 426,951.17, 640,531.87 and 300,837.71 is: 451,330.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,951.17 : 640,531.87 = 300,837.71 : x
  2. Step 2: Convert to fraction form
    426,951.17/640,531.87 = 300,837.71/x
  3. Step 3: Cross multiply
    426,951.17x = 640,531.87 × 300,837.71
  4. Step 4: Simplify right side
    426,951.17x = 192,696,141,802.05
  5. Step 5: Solve for x
    x = 192,696,141,802.05/426,951.17
  6. Step 6: Final answer
    x = 451,330.63

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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.