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Finding the Fourth Proportional to 291,752.40, 437,622.20 and 81,384.40

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Solution

The fourth proportional to 291,752.40, 437,622.20 and 81,384.40 is: 122,074.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,752.40 : 437,622.20 = 81,384.40 : x
  2. Step 2: Convert to fraction form
    291,752.40/437,622.20 = 81,384.40/x
  3. Step 3: Cross multiply
    291,752.40x = 437,622.20 × 81,384.40
  4. Step 4: Simplify right side
    291,752.40x = 35,615,620,173.68
  5. Step 5: Solve for x
    x = 35,615,620,173.68/291,752.40
  6. Step 6: Final answer
    x = 122,074.81

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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.