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Finding the Fourth Proportional to 426,551.70, 640,048.35 and 174,017.30

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Solution

The fourth proportional to 426,551.70, 640,048.35 and 174,017.30 is: 261,116.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,551.70 : 640,048.35 = 174,017.30 : x
  2. Step 2: Convert to fraction form
    426,551.70/640,048.35 = 174,017.30/x
  3. Step 3: Cross multiply
    426,551.70x = 640,048.35 × 174,017.30
  4. Step 4: Simplify right side
    426,551.70x = 111,379,485,736.46
  5. Step 5: Solve for x
    x = 111,379,485,736.46/426,551.70
  6. Step 6: Final answer
    x = 261,116.03

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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.