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Finding the Fourth Proportional to 448,512.80, 618,936.80 and 257,522.09

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Solution

The fourth proportional to 448,512.80, 618,936.80 and 257,522.09 is: 355,374.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,512.80 : 618,936.80 = 257,522.09 : x
  2. Step 2: Convert to fraction form
    448,512.80/618,936.80 = 257,522.09/x
  3. Step 3: Cross multiply
    448,512.80x = 618,936.80 × 257,522.09
  4. Step 4: Simplify right side
    448,512.80x = 159,389,893,931.62
  5. Step 5: Solve for x
    x = 159,389,893,931.62/448,512.80
  6. Step 6: Final answer
    x = 355,374.24

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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.