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Finding the Fourth Proportional to 368,718.52, 508,869.66 and 225,573.76

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Solution

The fourth proportional to 368,718.52, 508,869.66 and 225,573.76 is: 311,315.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,718.52 : 508,869.66 = 225,573.76 : x
  2. Step 2: Convert to fraction form
    368,718.52/508,869.66 = 225,573.76/x
  3. Step 3: Cross multiply
    368,718.52x = 508,869.66 × 225,573.76
  4. Step 4: Simplify right side
    368,718.52x = 114,787,642,556.12
  5. Step 5: Solve for x
    x = 114,787,642,556.12/368,718.52
  6. Step 6: Final answer
    x = 311,315.10

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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.