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Finding the Fourth Proportional to 393,525.72, 590,413.08 and 140,800.68

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Solution

The fourth proportional to 393,525.72, 590,413.08 and 140,800.68 is: 211,245.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,525.72 : 590,413.08 = 140,800.68 : x
  2. Step 2: Convert to fraction form
    393,525.72/590,413.08 = 140,800.68/x
  3. Step 3: Cross multiply
    393,525.72x = 590,413.08 × 140,800.68
  4. Step 4: Simplify right side
    393,525.72x = 83,130,563,144.89
  5. Step 5: Solve for x
    x = 83,130,563,144.89/393,525.72
  6. Step 6: Final answer
    x = 211,245.57

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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.