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Finding the Fourth Proportional to 490,081.60, 735,122.40 and 370,331.20

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Solution

The fourth proportional to 490,081.60, 735,122.40 and 370,331.20 is: 555,496.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,081.60 : 735,122.40 = 370,331.20 : x
  2. Step 2: Convert to fraction form
    490,081.60/735,122.40 = 370,331.20/x
  3. Step 3: Cross multiply
    490,081.60x = 735,122.40 × 370,331.20
  4. Step 4: Simplify right side
    490,081.60x = 272,238,760,538.88
  5. Step 5: Solve for x
    x = 272,238,760,538.88/490,081.60
  6. Step 6: Final answer
    x = 555,496.80

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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.