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Finding the Fourth Proportional to 370,892.58, 554,960.25 and 221,214.30

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Solution

The fourth proportional to 370,892.58, 554,960.25 and 221,214.30 is: 330,999.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,892.58 : 554,960.25 = 221,214.30 : x
  2. Step 2: Convert to fraction form
    370,892.58/554,960.25 = 221,214.30/x
  3. Step 3: Cross multiply
    370,892.58x = 554,960.25 × 221,214.30
  4. Step 4: Simplify right side
    370,892.58x = 122,765,143,231.58
  5. Step 5: Solve for x
    x = 122,765,143,231.58/370,892.58
  6. Step 6: Final answer
    x = 330,999.19

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1.5x scale

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.