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Finding the Fourth Proportional to 515,642.96, 773,485.16 and 245,632.29

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Solution

The fourth proportional to 515,642.96, 773,485.16 and 245,632.29 is: 368,458.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,642.96 : 773,485.16 = 245,632.29 : x
  2. Step 2: Convert to fraction form
    515,642.96/773,485.16 = 245,632.29/x
  3. Step 3: Cross multiply
    515,642.96x = 773,485.16 × 245,632.29
  4. Step 4: Simplify right side
    515,642.96x = 189,992,931,745.90
  5. Step 5: Solve for x
    x = 189,992,931,745.90/515,642.96
  6. Step 6: Final answer
    x = 368,458.31

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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.