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Finding the Fourth Proportional to 426,494.94, 639,840.84 and 227,007.74

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Solution

The fourth proportional to 426,494.94, 639,840.84 and 227,007.74 is: 340,564.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,494.94 : 639,840.84 = 227,007.74 : x
  2. Step 2: Convert to fraction form
    426,494.94/639,840.84 = 227,007.74/x
  3. Step 3: Cross multiply
    426,494.94x = 639,840.84 × 227,007.74
  4. Step 4: Simplify right side
    426,494.94x = 145,248,823,048.10
  5. Step 5: Solve for x
    x = 145,248,823,048.10/426,494.94
  6. Step 6: Final answer
    x = 340,564.00

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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.