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Finding the Fourth Proportional to 547,099.64, 755,123.47 and 320,818.04

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Solution

The fourth proportional to 547,099.64, 755,123.47 and 320,818.04 is: 442,802.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,099.64 : 755,123.47 = 320,818.04 : x
  2. Step 2: Convert to fraction form
    547,099.64/755,123.47 = 320,818.04/x
  3. Step 3: Cross multiply
    547,099.64x = 755,123.47 × 320,818.04
  4. Step 4: Simplify right side
    547,099.64x = 242,257,227,025.74
  5. Step 5: Solve for x
    x = 242,257,227,025.74/547,099.64
  6. Step 6: Final answer
    x = 442,802.76

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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.