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Finding the Fourth Proportional to 448,420.88, 618,858.60 and 247,258.64

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Solution

The fourth proportional to 448,420.88, 618,858.60 and 247,258.64 is: 341,237.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,420.88 : 618,858.60 = 247,258.64 : x
  2. Step 2: Convert to fraction form
    448,420.88/618,858.60 = 247,258.64/x
  3. Step 3: Cross multiply
    448,420.88x = 618,858.60 × 247,258.64
  4. Step 4: Simplify right side
    448,420.88x = 153,018,135,788.30
  5. Step 5: Solve for x
    x = 153,018,135,788.30/448,420.88
  6. Step 6: Final answer
    x = 341,237.76

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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.