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Finding the Fourth Proportional to 413,219.20, 618,646.20 and 254,378.20

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Solution

The fourth proportional to 413,219.20, 618,646.20 and 254,378.20 is: 380,839.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    413,219.20 : 618,646.20 = 254,378.20 : x
  2. Step 2: Convert to fraction form
    413,219.20/618,646.20 = 254,378.20/x
  3. Step 3: Cross multiply
    413,219.20x = 618,646.20 × 254,378.20
  4. Step 4: Simplify right side
    413,219.20x = 157,370,106,792.84
  5. Step 5: Solve for x
    x = 157,370,106,792.84/413,219.20
  6. Step 6: Final answer
    x = 380,839.29

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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.