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Finding the Fourth Proportional to 259,999.48, 389,712.97 and 170,005.08

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Solution

The fourth proportional to 259,999.48, 389,712.97 and 170,005.08 is: 254,820.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,999.48 : 389,712.97 = 170,005.08 : x
  2. Step 2: Convert to fraction form
    259,999.48/389,712.97 = 170,005.08/x
  3. Step 3: Cross multiply
    259,999.48x = 389,712.97 × 170,005.08
  4. Step 4: Simplify right side
    259,999.48x = 66,253,184,641.89
  5. Step 5: Solve for x
    x = 66,253,184,641.89/259,999.48
  6. Step 6: Final answer
    x = 254,820.45

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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.