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Finding the Fourth Proportional to 508,312.26, 701,483.90 and 278,879.36

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Solution

The fourth proportional to 508,312.26, 701,483.90 and 278,879.36 is: 384,860.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,312.26 : 701,483.90 = 278,879.36 : x
  2. Step 2: Convert to fraction form
    508,312.26/701,483.90 = 278,879.36/x
  3. Step 3: Cross multiply
    508,312.26x = 701,483.90 × 278,879.36
  4. Step 4: Simplify right side
    508,312.26x = 195,629,376,180.49
  5. Step 5: Solve for x
    x = 195,629,376,180.49/508,312.26
  6. Step 6: Final answer
    x = 384,860.63

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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.