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Finding the Fourth Proportional to 519,903.63, 779,921.22 and 178,413.57

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Solution

The fourth proportional to 519,903.63, 779,921.22 and 178,413.57 is: 267,642.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,903.63 : 779,921.22 = 178,413.57 : x
  2. Step 2: Convert to fraction form
    519,903.63/779,921.22 = 178,413.57/x
  3. Step 3: Cross multiply
    519,903.63x = 779,921.22 × 178,413.57
  4. Step 4: Simplify right side
    519,903.63x = 139,148,529,178.96
  5. Step 5: Solve for x
    x = 139,148,529,178.96/519,903.63
  6. Step 6: Final answer
    x = 267,642.93

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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.