Home / 320,905.68-481,506-121,295.40

Finding the Fourth Proportional to 320,905.68, 481,506 and 121,295.40

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Solution

The fourth proportional to 320,905.68, 481,506 and 121,295.40 is: 181,998.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,905.68 : 481,506 = 121,295.40 : x
  2. Step 2: Convert to fraction form
    320,905.68/481,506 = 121,295.40/x
  3. Step 3: Cross multiply
    320,905.68x = 481,506 × 121,295.40
  4. Step 4: Simplify right side
    320,905.68x = 58,404,462,872.40
  5. Step 5: Solve for x
    x = 58,404,462,872.40/320,905.68
  6. Step 6: Final answer
    x = 181,998.84

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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.