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Finding the Fourth Proportional to 402,911.91, 555,917.85 and 259,499.39

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Solution

The fourth proportional to 402,911.91, 555,917.85 and 259,499.39 is: 358,044.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,911.91 : 555,917.85 = 259,499.39 : x
  2. Step 2: Convert to fraction form
    402,911.91/555,917.85 = 259,499.39/x
  3. Step 3: Cross multiply
    402,911.91x = 555,917.85 × 259,499.39
  4. Step 4: Simplify right side
    402,911.91x = 144,260,340,185.52
  5. Step 5: Solve for x
    x = 144,260,340,185.52/402,911.91
  6. Step 6: Final answer
    x = 358,044.37

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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.