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Finding the Fourth Proportional to 475,600.78, 656,328.92 and 260,736.23

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Solution

The fourth proportional to 475,600.78, 656,328.92 and 260,736.23 is: 359,815.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    475,600.78 : 656,328.92 = 260,736.23 : x
  2. Step 2: Convert to fraction form
    475,600.78/656,328.92 = 260,736.23/x
  3. Step 3: Cross multiply
    475,600.78x = 656,328.92 × 260,736.23
  4. Step 4: Simplify right side
    475,600.78x = 171,128,728,577.91
  5. Step 5: Solve for x
    x = 171,128,728,577.91/475,600.78
  6. Step 6: Final answer
    x = 359,815.91

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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.