Home / 320,570.74-480,899.85-133,538.50

Finding the Fourth Proportional to 320,570.74, 480,899.85 and 133,538.50

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Solution

The fourth proportional to 320,570.74, 480,899.85 and 133,538.50 is: 200,325.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,570.74 : 480,899.85 = 133,538.50 : x
  2. Step 2: Convert to fraction form
    320,570.74/480,899.85 = 133,538.50/x
  3. Step 3: Cross multiply
    320,570.74x = 480,899.85 × 133,538.50
  4. Step 4: Simplify right side
    320,570.74x = 64,218,644,619.23
  5. Step 5: Solve for x
    x = 64,218,644,619.23/320,570.74
  6. Step 6: Final answer
    x = 200,325.97

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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.