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Finding the Fourth Proportional to 448,424.80, 618,801.44 and 257,425.68

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Solution

The fourth proportional to 448,424.80, 618,801.44 and 257,425.68 is: 355,233.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,424.80 : 618,801.44 = 257,425.68 : x
  2. Step 2: Convert to fraction form
    448,424.80/618,801.44 = 257,425.68/x
  3. Step 3: Cross multiply
    448,424.80x = 618,801.44 × 257,425.68
  4. Step 4: Simplify right side
    448,424.80x = 159,295,381,476.98
  5. Step 5: Solve for x
    x = 159,295,381,476.98/448,424.80
  6. Step 6: Final answer
    x = 355,233.21

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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.