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Finding the Fourth Proportional to 340,846.88, 471,219 and 255,816.32

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Solution

The fourth proportional to 340,846.88, 471,219 and 255,816.32 is: 353,664.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,846.88 : 471,219 = 255,816.32 : x
  2. Step 2: Convert to fraction form
    340,846.88/471,219 = 255,816.32/x
  3. Step 3: Cross multiply
    340,846.88x = 471,219 × 255,816.32
  4. Step 4: Simplify right side
    340,846.88x = 120,545,510,494.08
  5. Step 5: Solve for x
    x = 120,545,510,494.08/340,846.88
  6. Step 6: Final answer
    x = 353,664.70

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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.