Home / 279,107.02-385,158.68-158,259.07

Finding the Fourth Proportional to 279,107.02, 385,158.68 and 158,259.07

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Solution

The fourth proportional to 279,107.02, 385,158.68 and 158,259.07 is: 218,392.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,107.02 : 385,158.68 = 158,259.07 : x
  2. Step 2: Convert to fraction form
    279,107.02/385,158.68 = 158,259.07/x
  3. Step 3: Cross multiply
    279,107.02x = 385,158.68 × 158,259.07
  4. Step 4: Simplify right side
    279,107.02x = 60,954,852,745.04
  5. Step 5: Solve for x
    x = 60,954,852,745.04/279,107.02
  6. Step 6: Final answer
    x = 218,392.40

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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.