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Finding the Fourth Proportional to 547,288.76, 755,384.46 and 321,007.16

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Solution

The fourth proportional to 547,288.76, 755,384.46 and 321,007.16 is: 443,063.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,288.76 : 755,384.46 = 321,007.16 : x
  2. Step 2: Convert to fraction form
    547,288.76/755,384.46 = 321,007.16/x
  3. Step 3: Cross multiply
    547,288.76x = 755,384.46 × 321,007.16
  4. Step 4: Simplify right side
    547,288.76x = 242,483,820,212.73
  5. Step 5: Solve for x
    x = 242,483,820,212.73/547,288.76
  6. Step 6: Final answer
    x = 443,063.77

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1.5x scale

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.