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Finding the Fourth Proportional to 449,458.40, 620,252.64 and 248,254.40

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Solution

The fourth proportional to 449,458.40, 620,252.64 and 248,254.40 is: 342,591.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,458.40 : 620,252.64 = 248,254.40 : x
  2. Step 2: Convert to fraction form
    449,458.40/620,252.64 = 248,254.40/x
  3. Step 3: Cross multiply
    449,458.40x = 620,252.64 × 248,254.40
  4. Step 4: Simplify right side
    449,458.40x = 153,980,446,991.62
  5. Step 5: Solve for x
    x = 153,980,446,991.62/449,458.40
  6. Step 6: Final answer
    x = 342,591.10

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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.