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Finding the Fourth Proportional to 426,228.34, 638,807.90 and 226,054.66

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Solution

The fourth proportional to 426,228.34, 638,807.90 and 226,054.66 is: 338,798.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,228.34 : 638,807.90 = 226,054.66 : x
  2. Step 2: Convert to fraction form
    426,228.34/638,807.90 = 226,054.66/x
  3. Step 3: Cross multiply
    426,228.34x = 638,807.90 × 226,054.66
  4. Step 4: Simplify right side
    426,228.34x = 144,405,502,639.81
  5. Step 5: Solve for x
    x = 144,405,502,639.81/426,228.34
  6. Step 6: Final answer
    x = 338,798.45

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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.