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Finding the Fourth Proportional to 503,928, 755,892 and 208,440

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Solution

The fourth proportional to 503,928, 755,892 and 208,440 is: 312,660

Step by Step Solution

  1. Step 1: Write the proportion equation
    503,928 : 755,892 = 208,440 : x
  2. Step 2: Convert to fraction form
    503,928/755,892 = 208,440/x
  3. Step 3: Cross multiply
    503,928x = 755,892 × 208,440
  4. Step 4: Simplify right side
    503,928x = 157,558,128,480
  5. Step 5: Solve for x
    x = 157,558,128,480/503,928
  6. Step 6: Final answer
    x = 312,660

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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.