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Finding the Fourth Proportional to 258,707.52, 388,002.96 and 71,733.60

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Solution

The fourth proportional to 258,707.52, 388,002.96 and 71,733.60 is: 107,584.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,707.52 : 388,002.96 = 71,733.60 : x
  2. Step 2: Convert to fraction form
    258,707.52/388,002.96 = 71,733.60/x
  3. Step 3: Cross multiply
    258,707.52x = 388,002.96 × 71,733.60
  4. Step 4: Simplify right side
    258,707.52x = 27,832,849,131.46
  5. Step 5: Solve for x
    x = 27,832,849,131.46/258,707.52
  6. Step 6: Final answer
    x = 107,584.23

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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.