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Finding the Fourth Proportional to 240,302.10, 360,485.55 and 82,578.90

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Solution

The fourth proportional to 240,302.10, 360,485.55 and 82,578.90 is: 123,879.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    240,302.10 : 360,485.55 = 82,578.90 : x
  2. Step 2: Convert to fraction form
    240,302.10/360,485.55 = 82,578.90/x
  3. Step 3: Cross multiply
    240,302.10x = 360,485.55 × 82,578.90
  4. Step 4: Simplify right side
    240,302.10x = 29,768,500,184.90
  5. Step 5: Solve for x
    x = 29,768,500,184.90/240,302.10
  6. Step 6: Final answer
    x = 123,879.48

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1.5x scale

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.