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Finding the Fourth Proportional to 438,906.60, 657,965.70 and 172,848.60

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Solution

The fourth proportional to 438,906.60, 657,965.70 and 172,848.60 is: 259,117.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,906.60 : 657,965.70 = 172,848.60 : x
  2. Step 2: Convert to fraction form
    438,906.60/657,965.70 = 172,848.60/x
  3. Step 3: Cross multiply
    438,906.60x = 657,965.70 × 172,848.60
  4. Step 4: Simplify right side
    438,906.60x = 113,728,450,093.02
  5. Step 5: Solve for x
    x = 113,728,450,093.02/438,906.60
  6. Step 6: Final answer
    x = 259,117.66

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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.