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Finding the Fourth Proportional to 449,470.40, 620,269.20 and 248,266.40

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Solution

The fourth proportional to 449,470.40, 620,269.20 and 248,266.40 is: 342,607.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,470.40 : 620,269.20 = 248,266.40 : x
  2. Step 2: Convert to fraction form
    449,470.40/620,269.20 = 248,266.40/x
  3. Step 3: Cross multiply
    449,470.40x = 620,269.20 × 248,266.40
  4. Step 4: Simplify right side
    449,470.40x = 153,992,001,314.88
  5. Step 5: Solve for x
    x = 153,992,001,314.88/449,470.40
  6. Step 6: Final answer
    x = 342,607.66

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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.