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Finding the Fourth Proportional to 520,161.60, 780,436.80 and 204,838.32

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Solution

The fourth proportional to 520,161.60, 780,436.80 and 204,838.32 is: 307,334.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,161.60 : 780,436.80 = 204,838.32 : x
  2. Step 2: Convert to fraction form
    520,161.60/780,436.80 = 204,838.32/x
  3. Step 3: Cross multiply
    520,161.60x = 780,436.80 × 204,838.32
  4. Step 4: Simplify right side
    520,161.60x = 159,863,362,978.18
  5. Step 5: Solve for x
    x = 159,863,362,978.18/520,161.60
  6. Step 6: Final answer
    x = 307,334.03

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.