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Finding the Fourth Proportional to 342,485.21, 472,622.51 and 189,523.30

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Solution

The fourth proportional to 342,485.21, 472,622.51 and 189,523.30 is: 261,538.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,485.21 : 472,622.51 = 189,523.30 : x
  2. Step 2: Convert to fraction form
    342,485.21/472,622.51 = 189,523.30/x
  3. Step 3: Cross multiply
    342,485.21x = 472,622.51 × 189,523.30
  4. Step 4: Simplify right side
    342,485.21x = 89,572,977,749.48
  5. Step 5: Solve for x
    x = 89,572,977,749.48/342,485.21
  6. Step 6: Final answer
    x = 261,538.24

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.