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Finding the Fourth Proportional to 426,963.36, 639,559.26 and 248,930.40

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Solution

The fourth proportional to 426,963.36, 639,559.26 and 248,930.40 is: 372,879.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,963.36 : 639,559.26 = 248,930.40 : x
  2. Step 2: Convert to fraction form
    426,963.36/639,559.26 = 248,930.40/x
  3. Step 3: Cross multiply
    426,963.36x = 639,559.26 × 248,930.40
  4. Step 4: Simplify right side
    426,963.36x = 159,205,742,415.50
  5. Step 5: Solve for x
    x = 159,205,742,415.50/426,963.36
  6. Step 6: Final answer
    x = 372,879.17

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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.