Home / 320,435.08-480,679.89-83,777.38

Finding the Fourth Proportional to 320,435.08, 480,679.89 and 83,777.38

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Solution

The fourth proportional to 320,435.08, 480,679.89 and 83,777.38 is: 125,673.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,435.08 : 480,679.89 = 83,777.38 : x
  2. Step 2: Convert to fraction form
    320,435.08/480,679.89 = 83,777.38/x
  3. Step 3: Cross multiply
    320,435.08x = 480,679.89 × 83,777.38
  4. Step 4: Simplify right side
    320,435.08x = 40,270,101,802.89
  5. Step 5: Solve for x
    x = 40,270,101,802.89/320,435.08
  6. Step 6: Final answer
    x = 125,673.20

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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.