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Finding the Fourth Proportional to 438,803.64, 658,443.60 and 186,226.20

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Solution

The fourth proportional to 438,803.64, 658,443.60 and 186,226.20 is: 279,440.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,803.64 : 658,443.60 = 186,226.20 : x
  2. Step 2: Convert to fraction form
    438,803.64/658,443.60 = 186,226.20/x
  3. Step 3: Cross multiply
    438,803.64x = 658,443.60 × 186,226.20
  4. Step 4: Simplify right side
    438,803.64x = 122,619,449,542.32
  5. Step 5: Solve for x
    x = 122,619,449,542.32/438,803.64
  6. Step 6: Final answer
    x = 279,440.37

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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.