Home / 828,376.66-1,242,419.19-221,172.51

Finding the Fourth Proportional to 828,376.66, 1,242,419.19 and 221,172.51

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Solution

The fourth proportional to 828,376.66, 1,242,419.19 and 221,172.51 is: 331,719.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    828,376.66 : 1,242,419.19 = 221,172.51 : x
  2. Step 2: Convert to fraction form
    828,376.66/1,242,419.19 = 221,172.51/x
  3. Step 3: Cross multiply
    828,376.66x = 1,242,419.19 × 221,172.51
  4. Step 4: Simplify right side
    828,376.66x = 274,788,974,554.14
  5. Step 5: Solve for x
    x = 274,788,974,554.14/828,376.66
  6. Step 6: Final answer
    x = 331,719.84

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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.