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Finding the Fourth Proportional to 294,520, 441,780 and 72,904

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Solution

The fourth proportional to 294,520, 441,780 and 72,904 is: 109,356

Step by Step Solution

  1. Step 1: Write the proportion equation
    294,520 : 441,780 = 72,904 : x
  2. Step 2: Convert to fraction form
    294,520/441,780 = 72,904/x
  3. Step 3: Cross multiply
    294,520x = 441,780 × 72,904
  4. Step 4: Simplify right side
    294,520x = 32,207,529,120
  5. Step 5: Solve for x
    x = 32,207,529,120/294,520
  6. Step 6: Final answer
    x = 109,356

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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.