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Finding the Fourth Proportional to 368,730.72, 508,819.32 and 207,553.68

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Solution

The fourth proportional to 368,730.72, 508,819.32 and 207,553.68 is: 286,407.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,730.72 : 508,819.32 = 207,553.68 : x
  2. Step 2: Convert to fraction form
    368,730.72/508,819.32 = 207,553.68/x
  3. Step 3: Cross multiply
    368,730.72x = 508,819.32 × 207,553.68
  4. Step 4: Simplify right side
    368,730.72x = 105,607,322,321.10
  5. Step 5: Solve for x
    x = 105,607,322,321.10/368,730.72
  6. Step 6: Final answer
    x = 286,407.71

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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.