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Finding the Fourth Proportional to 230,994.86, 318,750.39 and 129,012.21

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Solution

The fourth proportional to 230,994.86, 318,750.39 and 129,012.21 is: 178,024.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,994.86 : 318,750.39 = 129,012.21 : x
  2. Step 2: Convert to fraction form
    230,994.86/318,750.39 = 129,012.21/x
  3. Step 3: Cross multiply
    230,994.86x = 318,750.39 × 129,012.21
  4. Step 4: Simplify right side
    230,994.86x = 41,122,692,252.26
  5. Step 5: Solve for x
    x = 41,122,692,252.26/230,994.86
  6. Step 6: Final answer
    x = 178,024.28

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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.