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Finding the Fourth Proportional to 291,401.32, 437,102.46 and 81,039.40

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Solution

The fourth proportional to 291,401.32, 437,102.46 and 81,039.40 is: 121,559.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,401.32 : 437,102.46 = 81,039.40 : x
  2. Step 2: Convert to fraction form
    291,401.32/437,102.46 = 81,039.40/x
  3. Step 3: Cross multiply
    291,401.32x = 437,102.46 × 81,039.40
  4. Step 4: Simplify right side
    291,401.32x = 35,422,521,096.92
  5. Step 5: Solve for x
    x = 35,422,521,096.92/291,401.32
  6. Step 6: Final answer
    x = 121,559.23

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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.