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Finding the Fourth Proportional to 370,892.21, 556,349.64 and 127,730.66

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Solution

The fourth proportional to 370,892.21, 556,349.64 and 127,730.66 is: 191,599.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,892.21 : 556,349.64 = 127,730.66 : x
  2. Step 2: Convert to fraction form
    370,892.21/556,349.64 = 127,730.66/x
  3. Step 3: Cross multiply
    370,892.21x = 556,349.64 × 127,730.66
  4. Step 4: Simplify right side
    370,892.21x = 71,062,906,707.96
  5. Step 5: Solve for x
    x = 71,062,906,707.96/370,892.21
  6. Step 6: Final answer
    x = 191,599.89

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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.