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Finding the Fourth Proportional to 192,004.90, 288,007.35 and 103,431.40

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Solution

The fourth proportional to 192,004.90, 288,007.35 and 103,431.40 is: 155,147.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,004.90 : 288,007.35 = 103,431.40 : x
  2. Step 2: Convert to fraction form
    192,004.90/288,007.35 = 103,431.40/x
  3. Step 3: Cross multiply
    192,004.90x = 288,007.35 × 103,431.40
  4. Step 4: Simplify right side
    192,004.90x = 29,789,003,420.79
  5. Step 5: Solve for x
    x = 29,789,003,420.79/192,004.90
  6. Step 6: Final answer
    x = 155,147.10

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1.5x scale

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.