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Finding the Fourth Proportional to 448,431.89, 618,486.08 and 287,302.02

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Solution

The fourth proportional to 448,431.89, 618,486.08 and 287,302.02 is: 396,252.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,431.89 : 618,486.08 = 287,302.02 : x
  2. Step 2: Convert to fraction form
    448,431.89/618,486.08 = 287,302.02/x
  3. Step 3: Cross multiply
    448,431.89x = 618,486.08 × 287,302.02
  4. Step 4: Simplify right side
    448,431.89x = 177,692,298,689.37
  5. Step 5: Solve for x
    x = 177,692,298,689.37/448,431.89
  6. Step 6: Final answer
    x = 396,252.60

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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.