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Finding the Fourth Proportional to 445,635.16, 668,405.34 and 125,779.12

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Solution

The fourth proportional to 445,635.16, 668,405.34 and 125,779.12 is: 188,655.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,635.16 : 668,405.34 = 125,779.12 : x
  2. Step 2: Convert to fraction form
    445,635.16/668,405.34 = 125,779.12/x
  3. Step 3: Cross multiply
    445,635.16x = 668,405.34 × 125,779.12
  4. Step 4: Simplify right side
    445,635.16x = 84,071,435,468.50
  5. Step 5: Solve for x
    x = 84,071,435,468.50/445,635.16
  6. Step 6: Final answer
    x = 188,655.30

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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.