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Finding the Fourth Proportional to 256,616.63, 384,900.20 and 79,075.97

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Solution

The fourth proportional to 256,616.63, 384,900.20 and 79,075.97 is: 118,606.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,616.63 : 384,900.20 = 79,075.97 : x
  2. Step 2: Convert to fraction form
    256,616.63/384,900.20 = 79,075.97/x
  3. Step 3: Cross multiply
    256,616.63x = 384,900.20 × 79,075.97
  4. Step 4: Simplify right side
    256,616.63x = 30,436,354,348.31
  5. Step 5: Solve for x
    x = 30,436,354,348.31/256,616.63
  6. Step 6: Final answer
    x = 118,606.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.