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Finding the Fourth Proportional to 426,164.80, 638,809.80 and 248,580.40

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Solution

The fourth proportional to 426,164.80, 638,809.80 and 248,580.40 is: 372,615.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,164.80 : 638,809.80 = 248,580.40 : x
  2. Step 2: Convert to fraction form
    426,164.80/638,809.80 = 248,580.40/x
  3. Step 3: Cross multiply
    426,164.80x = 638,809.80 × 248,580.40
  4. Step 4: Simplify right side
    426,164.80x = 158,795,595,607.92
  5. Step 5: Solve for x
    x = 158,795,595,607.92/426,164.80
  6. Step 6: Final answer
    x = 372,615.47

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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.