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Finding the Fourth Proportional to 388,755.61, 581,003.46 and 283,795.61

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Solution

The fourth proportional to 388,755.61, 581,003.46 and 283,795.61 is: 424,138.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,755.61 : 581,003.46 = 283,795.61 : x
  2. Step 2: Convert to fraction form
    388,755.61/581,003.46 = 283,795.61/x
  3. Step 3: Cross multiply
    388,755.61x = 581,003.46 × 283,795.61
  4. Step 4: Simplify right side
    388,755.61x = 164,886,231,342.81
  5. Step 5: Solve for x
    x = 164,886,231,342.81/388,755.61
  6. Step 6: Final answer
    x = 424,138.53

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.