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Finding the Fourth Proportional to 492,740.70, 739,111.05 and 212,804.70

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Solution

The fourth proportional to 492,740.70, 739,111.05 and 212,804.70 is: 319,207.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,740.70 : 739,111.05 = 212,804.70 : x
  2. Step 2: Convert to fraction form
    492,740.70/739,111.05 = 212,804.70/x
  3. Step 3: Cross multiply
    492,740.70x = 739,111.05 × 212,804.70
  4. Step 4: Simplify right side
    492,740.70x = 157,286,305,261.94
  5. Step 5: Solve for x
    x = 157,286,305,261.94/492,740.70
  6. Step 6: Final answer
    x = 319,207.05

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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.