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Finding the Fourth Proportional to 281,511.56, 388,493.51 and 158,994.11

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Solution

The fourth proportional to 281,511.56, 388,493.51 and 158,994.11 is: 219,416.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,511.56 : 388,493.51 = 158,994.11 : x
  2. Step 2: Convert to fraction form
    281,511.56/388,493.51 = 158,994.11/x
  3. Step 3: Cross multiply
    281,511.56x = 388,493.51 × 158,994.11
  4. Step 4: Simplify right side
    281,511.56x = 61,768,180,039.49
  5. Step 5: Solve for x
    x = 61,768,180,039.49/281,511.56
  6. Step 6: Final answer
    x = 219,416.14

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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.