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Finding the Fourth Proportional to 255,997.50, 353,409.35 and 187,009.50

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Solution

The fourth proportional to 255,997.50, 353,409.35 and 187,009.50 is: 258,170.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,997.50 : 353,409.35 = 187,009.50 : x
  2. Step 2: Convert to fraction form
    255,997.50/353,409.35 = 187,009.50/x
  3. Step 3: Cross multiply
    255,997.50x = 353,409.35 × 187,009.50
  4. Step 4: Simplify right side
    255,997.50x = 66,090,906,306.35
  5. Step 5: Solve for x
    x = 66,090,906,306.35/255,997.50
  6. Step 6: Final answer
    x = 258,170.12

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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.