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Finding the Fourth Proportional to 377,628.79, 521,138.81 and 205,557.98

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Solution

The fourth proportional to 377,628.79, 521,138.81 and 205,557.98 is: 283,676.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,628.79 : 521,138.81 = 205,557.98 : x
  2. Step 2: Convert to fraction form
    377,628.79/521,138.81 = 205,557.98/x
  3. Step 3: Cross multiply
    377,628.79x = 521,138.81 × 205,557.98
  4. Step 4: Simplify right side
    377,628.79x = 107,124,242,366.60
  5. Step 5: Solve for x
    x = 107,124,242,366.60/377,628.79
  6. Step 6: Final answer
    x = 283,676.04

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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.