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Finding the Fourth Proportional to 492,643.05, 739,296.06 and 172,797.81

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Solution

The fourth proportional to 492,643.05, 739,296.06 and 172,797.81 is: 259,312.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,643.05 : 739,296.06 = 172,797.81 : x
  2. Step 2: Convert to fraction form
    492,643.05/739,296.06 = 172,797.81/x
  3. Step 3: Cross multiply
    492,643.05x = 739,296.06 × 172,797.81
  4. Step 4: Simplify right side
    492,643.05x = 127,748,736,413.15
  5. Step 5: Solve for x
    x = 127,748,736,413.15/492,643.05
  6. Step 6: Final answer
    x = 259,312.98

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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.