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Finding the Fourth Proportional to 258,085.44, 355,188.24 and 218,320.92

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Solution

The fourth proportional to 258,085.44, 355,188.24 and 218,320.92 is: 300,462.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,085.44 : 355,188.24 = 218,320.92 : x
  2. Step 2: Convert to fraction form
    258,085.44/355,188.24 = 218,320.92/x
  3. Step 3: Cross multiply
    258,085.44x = 355,188.24 × 218,320.92
  4. Step 4: Simplify right side
    258,085.44x = 77,545,023,329.98
  5. Step 5: Solve for x
    x = 77,545,023,329.98/258,085.44
  6. Step 6: Final answer
    x = 300,462.60

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1.5x scale

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.