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Finding the Fourth Proportional to 379,410.87, 523,588.37 and 207,328.84

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Solution

The fourth proportional to 379,410.87, 523,588.37 and 207,328.84 is: 286,114.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,410.87 : 523,588.37 = 207,328.84 : x
  2. Step 2: Convert to fraction form
    379,410.87/523,588.37 = 207,328.84/x
  3. Step 3: Cross multiply
    379,410.87x = 523,588.37 × 207,328.84
  4. Step 4: Simplify right side
    379,410.87x = 108,554,969,389.59
  5. Step 5: Solve for x
    x = 108,554,969,389.59/379,410.87
  6. Step 6: Final answer
    x = 286,114.55

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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.