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Finding the Fourth Proportional to 382,497.80, 527,865.63 and 212,728.28

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Solution

The fourth proportional to 382,497.80, 527,865.63 and 212,728.28 is: 293,575.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    382,497.80 : 527,865.63 = 212,728.28 : x
  2. Step 2: Convert to fraction form
    382,497.80/527,865.63 = 212,728.28/x
  3. Step 3: Cross multiply
    382,497.80x = 527,865.63 × 212,728.28
  4. Step 4: Simplify right side
    382,497.80x = 112,291,947,541.02
  5. Step 5: Solve for x
    x = 112,291,947,541.02/382,497.80
  6. Step 6: Final answer
    x = 293,575.41

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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.