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Finding the Fourth Proportional to 369,479.66, 509,887.61 and 216,481.23

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Solution

The fourth proportional to 369,479.66, 509,887.61 and 216,481.23 is: 298,747.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,479.66 : 509,887.61 = 216,481.23 : x
  2. Step 2: Convert to fraction form
    369,479.66/509,887.61 = 216,481.23/x
  3. Step 3: Cross multiply
    369,479.66x = 509,887.61 × 216,481.23
  4. Step 4: Simplify right side
    369,479.66x = 110,381,095,892.15
  5. Step 5: Solve for x
    x = 110,381,095,892.15/369,479.66
  6. Step 6: Final answer
    x = 298,747.43

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1.5x scale

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.