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Finding the Fourth Proportional to 390,166.84, 585,250.24 and 109,684.09

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Solution

The fourth proportional to 390,166.84, 585,250.24 and 109,684.09 is: 164,526.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,166.84 : 585,250.24 = 109,684.09 : x
  2. Step 2: Convert to fraction form
    390,166.84/585,250.24 = 109,684.09/x
  3. Step 3: Cross multiply
    390,166.84x = 585,250.24 × 109,684.09
  4. Step 4: Simplify right side
    390,166.84x = 64,192,639,996.68
  5. Step 5: Solve for x
    x = 64,192,639,996.68/390,166.84
  6. Step 6: Final answer
    x = 164,526.13

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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.