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Finding the Fourth Proportional to 449,570.88, 620,447.36 and 248,405.76

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Solution

The fourth proportional to 449,570.88, 620,447.36 and 248,405.76 is: 342,821.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,570.88 : 620,447.36 = 248,405.76 : x
  2. Step 2: Convert to fraction form
    449,570.88/620,447.36 = 248,405.76/x
  3. Step 3: Cross multiply
    449,570.88x = 620,447.36 × 248,405.76
  4. Step 4: Simplify right side
    449,570.88x = 154,122,698,000.79
  5. Step 5: Solve for x
    x = 154,122,698,000.79/449,570.88
  6. Step 6: Final answer
    x = 342,821.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.