Home / 278,074.21-383,727.66-157,208.29

Finding the Fourth Proportional to 278,074.21, 383,727.66 and 157,208.29

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Solution

The fourth proportional to 278,074.21, 383,727.66 and 157,208.29 is: 216,939.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,074.21 : 383,727.66 = 157,208.29 : x
  2. Step 2: Convert to fraction form
    278,074.21/383,727.66 = 157,208.29/x
  3. Step 3: Cross multiply
    278,074.21x = 383,727.66 × 157,208.29
  4. Step 4: Simplify right side
    278,074.21x = 60,325,169,254.30
  5. Step 5: Solve for x
    x = 60,325,169,254.30/278,074.21
  6. Step 6: Final answer
    x = 216,939.10

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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.