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Finding the Fourth Proportional to 490,220.40, 735,352.20 and 276,985.20

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Solution

The fourth proportional to 490,220.40, 735,352.20 and 276,985.20 is: 415,490.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,220.40 : 735,352.20 = 276,985.20 : x
  2. Step 2: Convert to fraction form
    490,220.40/735,352.20 = 276,985.20/x
  3. Step 3: Cross multiply
    490,220.40x = 735,352.20 × 276,985.20
  4. Step 4: Simplify right side
    490,220.40x = 203,681,676,187.44
  5. Step 5: Solve for x
    x = 203,681,676,187.44/490,220.40
  6. Step 6: Final answer
    x = 415,490.00

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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.