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Finding the Fourth Proportional to 405,095.86, 607,635.96 and 120,978.91

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Solution

The fourth proportional to 405,095.86, 607,635.96 and 120,978.91 is: 181,466.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,095.86 : 607,635.96 = 120,978.91 : x
  2. Step 2: Convert to fraction form
    405,095.86/607,635.96 = 120,978.91/x
  3. Step 3: Cross multiply
    405,095.86x = 607,635.96 × 120,978.91
  4. Step 4: Simplify right side
    405,095.86x = 73,511,136,117.60
  5. Step 5: Solve for x
    x = 73,511,136,117.60/405,095.86
  6. Step 6: Final answer
    x = 181,466.03

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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.