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Finding the Fourth Proportional to 273,387.40, 410,145.90 and 140,288.20

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Solution

The fourth proportional to 273,387.40, 410,145.90 and 140,288.20 is: 210,465.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    273,387.40 : 410,145.90 = 140,288.20 : x
  2. Step 2: Convert to fraction form
    273,387.40/410,145.90 = 140,288.20/x
  3. Step 3: Cross multiply
    273,387.40x = 410,145.90 × 140,288.20
  4. Step 4: Simplify right side
    273,387.40x = 57,538,630,048.38
  5. Step 5: Solve for x
    x = 57,538,630,048.38/273,387.40
  6. Step 6: Final answer
    x = 210,465.55

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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.