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Finding the Fourth Proportional to 445,970.61, 668,978.39 and 126,145.35

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Solution

The fourth proportional to 445,970.61, 668,978.39 and 126,145.35 is: 189,224.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,970.61 : 668,978.39 = 126,145.35 : x
  2. Step 2: Convert to fraction form
    445,970.61/668,978.39 = 126,145.35/x
  3. Step 3: Cross multiply
    445,970.61x = 668,978.39 × 126,145.35
  4. Step 4: Simplify right side
    445,970.61x = 84,388,513,464.35
  5. Step 5: Solve for x
    x = 84,388,513,464.35/445,970.61
  6. Step 6: Final answer
    x = 189,224.38

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.