Home / 405,280.46-607,933.05-139,037.21

Finding the Fourth Proportional to 405,280.46, 607,933.05 and 139,037.21

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Solution

The fourth proportional to 405,280.46, 607,933.05 and 139,037.21 is: 208,560.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,280.46 : 607,933.05 = 139,037.21 : x
  2. Step 2: Convert to fraction form
    405,280.46/607,933.05 = 139,037.21/x
  3. Step 3: Cross multiply
    405,280.46x = 607,933.05 × 139,037.21
  4. Step 4: Simplify right side
    405,280.46x = 84,525,313,857.48
  5. Step 5: Solve for x
    x = 84,525,313,857.48/405,280.46
  6. Step 6: Final answer
    x = 208,560.05

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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.