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Finding the Fourth Proportional to 405,900.68, 608,779.74 and 125,420.36

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Solution

The fourth proportional to 405,900.68, 608,779.74 and 125,420.36 is: 188,108.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,900.68 : 608,779.74 = 125,420.36 : x
  2. Step 2: Convert to fraction form
    405,900.68/608,779.74 = 125,420.36/x
  3. Step 3: Cross multiply
    405,900.68x = 608,779.74 × 125,420.36
  4. Step 4: Simplify right side
    405,900.68x = 76,353,374,151.51
  5. Step 5: Solve for x
    x = 76,353,374,151.51/405,900.68
  6. Step 6: Final answer
    x = 188,108.51

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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.