Home / 145,619.88-218,429.91-40,438.86

Finding the Fourth Proportional to 145,619.88, 218,429.91 and 40,438.86

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Solution

The fourth proportional to 145,619.88, 218,429.91 and 40,438.86 is: 60,658.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,619.88 : 218,429.91 = 40,438.86 : x
  2. Step 2: Convert to fraction form
    145,619.88/218,429.91 = 40,438.86/x
  3. Step 3: Cross multiply
    145,619.88x = 218,429.91 × 40,438.86
  4. Step 4: Simplify right side
    145,619.88x = 8,833,056,550.30
  5. Step 5: Solve for x
    x = 8,833,056,550.30/145,619.88
  6. Step 6: Final answer
    x = 60,658.31

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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.