Home / 280,328.28-386,850.24-153,002.76

Finding the Fourth Proportional to 280,328.28, 386,850.24 and 153,002.76

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Solution

The fourth proportional to 280,328.28, 386,850.24 and 153,002.76 is: 211,142.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,328.28 : 386,850.24 = 153,002.76 : x
  2. Step 2: Convert to fraction form
    280,328.28/386,850.24 = 153,002.76/x
  3. Step 3: Cross multiply
    280,328.28x = 386,850.24 × 153,002.76
  4. Step 4: Simplify right side
    280,328.28x = 59,189,154,426.66
  5. Step 5: Solve for x
    x = 59,189,154,426.66/280,328.28
  6. Step 6: Final answer
    x = 211,142.29

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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.