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Finding the Fourth Proportional to 230,645.52, 318,236.76 and 139,999.32

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Solution

The fourth proportional to 230,645.52, 318,236.76 and 139,999.32 is: 193,166.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,645.52 : 318,236.76 = 139,999.32 : x
  2. Step 2: Convert to fraction form
    230,645.52/318,236.76 = 139,999.32/x
  3. Step 3: Cross multiply
    230,645.52x = 318,236.76 × 139,999.32
  4. Step 4: Simplify right side
    230,645.52x = 44,552,929,999.00
  5. Step 5: Solve for x
    x = 44,552,929,999.00/230,645.52
  6. Step 6: Final answer
    x = 193,166.25

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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.