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Finding the Fourth Proportional to 253,287.36, 379,790.60 and 103,632.64

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Solution

The fourth proportional to 253,287.36, 379,790.60 and 103,632.64 is: 155,391.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,287.36 : 379,790.60 = 103,632.64 : x
  2. Step 2: Convert to fraction form
    253,287.36/379,790.60 = 103,632.64/x
  3. Step 3: Cross multiply
    253,287.36x = 379,790.60 × 103,632.64
  4. Step 4: Simplify right side
    253,287.36x = 39,358,702,525.18
  5. Step 5: Solve for x
    x = 39,358,702,525.18/253,287.36
  6. Step 6: Final answer
    x = 155,391.50

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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.