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Finding the Fourth Proportional to 369,479.91, 509,887.95 and 216,481.48

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Solution

The fourth proportional to 369,479.91, 509,887.95 and 216,481.48 is: 298,747.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,479.91 : 509,887.95 = 216,481.48 : x
  2. Step 2: Convert to fraction form
    369,479.91/509,887.95 = 216,481.48/x
  3. Step 3: Cross multiply
    369,479.91x = 509,887.95 × 216,481.48
  4. Step 4: Simplify right side
    369,479.91x = 110,381,296,967.76
  5. Step 5: Solve for x
    x = 110,381,296,967.76/369,479.91
  6. Step 6: Final answer
    x = 298,747.77

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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.