Home / 280,268.55-386,783.20-157,803.10

Finding the Fourth Proportional to 280,268.55, 386,783.20 and 157,803.10

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Solution

The fourth proportional to 280,268.55, 386,783.20 and 157,803.10 is: 217,775.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,268.55 : 386,783.20 = 157,803.10 : x
  2. Step 2: Convert to fraction form
    280,268.55/386,783.20 = 157,803.10/x
  3. Step 3: Cross multiply
    280,268.55x = 386,783.20 × 157,803.10
  4. Step 4: Simplify right side
    280,268.55x = 61,035,587,987.92
  5. Step 5: Solve for x
    x = 61,035,587,987.92/280,268.55
  6. Step 6: Final answer
    x = 217,775.37

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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.