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Finding the Fourth Proportional to 547,099.51, 755,123.30 and 320,817.91

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Solution

The fourth proportional to 547,099.51, 755,123.30 and 320,817.91 is: 442,802.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,099.51 : 755,123.30 = 320,817.91 : x
  2. Step 2: Convert to fraction form
    547,099.51/755,123.30 = 320,817.91/x
  3. Step 3: Cross multiply
    547,099.51x = 755,123.30 × 320,817.91
  4. Step 4: Simplify right side
    547,099.51x = 242,257,077,294.21
  5. Step 5: Solve for x
    x = 242,257,077,294.21/547,099.51
  6. Step 6: Final answer
    x = 442,802.59

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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.