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Finding the Fourth Proportional to 509,740.62, 764,702.87 and 210,054.39

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Solution

The fourth proportional to 509,740.62, 764,702.87 and 210,054.39 is: 315,119.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,740.62 : 764,702.87 = 210,054.39 : x
  2. Step 2: Convert to fraction form
    509,740.62/764,702.87 = 210,054.39/x
  3. Step 3: Cross multiply
    509,740.62x = 764,702.87 × 210,054.39
  4. Step 4: Simplify right side
    509,740.62x = 160,629,193,838.83
  5. Step 5: Solve for x
    x = 160,629,193,838.83/509,740.62
  6. Step 6: Final answer
    x = 315,119.47

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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.