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Finding the Fourth Proportional to 388,258.22, 535,818.49 and 233,256.93

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Solution

The fourth proportional to 388,258.22, 535,818.49 and 233,256.93 is: 321,907.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,258.22 : 535,818.49 = 233,256.93 : x
  2. Step 2: Convert to fraction form
    388,258.22/535,818.49 = 233,256.93/x
  3. Step 3: Cross multiply
    388,258.22x = 535,818.49 × 233,256.93
  4. Step 4: Simplify right side
    388,258.22x = 124,983,376,014.64
  5. Step 5: Solve for x
    x = 124,983,376,014.64/388,258.22
  6. Step 6: Final answer
    x = 321,907.87

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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.