Home / 405,046.20-607,655.41-138,735.21

Finding the Fourth Proportional to 405,046.20, 607,655.41 and 138,735.21

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Solution

The fourth proportional to 405,046.20, 607,655.41 and 138,735.21 is: 208,132.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,046.20 : 607,655.41 = 138,735.21 : x
  2. Step 2: Convert to fraction form
    405,046.20/607,655.41 = 138,735.21/x
  3. Step 3: Cross multiply
    405,046.20x = 607,655.41 × 138,735.21
  4. Step 4: Simplify right side
    405,046.20x = 84,303,200,913.99
  5. Step 5: Solve for x
    x = 84,303,200,913.99/405,046.20
  6. Step 6: Final answer
    x = 208,132.31

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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.