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Finding the Fourth Proportional to 467,330, 644,915.40 and 255,362

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Solution

The fourth proportional to 467,330, 644,915.40 and 255,362 is: 352,399.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    467,330 : 644,915.40 = 255,362 : x
  2. Step 2: Convert to fraction form
    467,330/644,915.40 = 255,362/x
  3. Step 3: Cross multiply
    467,330x = 644,915.40 × 255,362
  4. Step 4: Simplify right side
    467,330x = 164,686,886,374.80
  5. Step 5: Solve for x
    x = 164,686,886,374.80/467,330
  6. Step 6: Final answer
    x = 352,399.56

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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.