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Finding the Fourth Proportional to 377,012.54, 520,279 and 207,257.60

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Solution

The fourth proportional to 377,012.54, 520,279 and 207,257.60 is: 286,016.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,012.54 : 520,279 = 207,257.60 : x
  2. Step 2: Convert to fraction form
    377,012.54/520,279 = 207,257.60/x
  3. Step 3: Cross multiply
    377,012.54x = 520,279 × 207,257.60
  4. Step 4: Simplify right side
    377,012.54x = 107,831,776,870.40
  5. Step 5: Solve for x
    x = 107,831,776,870.40/377,012.54
  6. Step 6: Final answer
    x = 286,016.42

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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.