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Finding the Fourth Proportional to 448,178, 618,485.64 and 246,974

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Solution

The fourth proportional to 448,178, 618,485.64 and 246,974 is: 340,824.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,178 : 618,485.64 = 246,974 : x
  2. Step 2: Convert to fraction form
    448,178/618,485.64 = 246,974/x
  3. Step 3: Cross multiply
    448,178x = 618,485.64 × 246,974
  4. Step 4: Simplify right side
    448,178x = 152,749,872,453.36
  5. Step 5: Solve for x
    x = 152,749,872,453.36/448,178
  6. Step 6: Final answer
    x = 340,824.12

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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.