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Finding the Fourth Proportional to 647,678.76, 971,529.48 and 248,342.28

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Solution

The fourth proportional to 647,678.76, 971,529.48 and 248,342.28 is: 372,517.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,678.76 : 971,529.48 = 248,342.28 : x
  2. Step 2: Convert to fraction form
    647,678.76/971,529.48 = 248,342.28/x
  3. Step 3: Cross multiply
    647,678.76x = 971,529.48 × 248,342.28
  4. Step 4: Simplify right side
    647,678.76x = 241,271,846,150.41
  5. Step 5: Solve for x
    x = 241,271,846,150.41/647,678.76
  6. Step 6: Final answer
    x = 372,517.77

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.