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Finding the Fourth Proportional to 530,235.70, 731,737.78 and 300,808.46

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Solution

The fourth proportional to 530,235.70, 731,737.78 and 300,808.46 is: 415,122.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,235.70 : 731,737.78 = 300,808.46 : x
  2. Step 2: Convert to fraction form
    530,235.70/731,737.78 = 300,808.46/x
  3. Step 3: Cross multiply
    530,235.70x = 731,737.78 × 300,808.46
  4. Step 4: Simplify right side
    530,235.70x = 220,112,915,802.94
  5. Step 5: Solve for x
    x = 220,112,915,802.94/530,235.70
  6. Step 6: Final answer
    x = 415,122.78

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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.