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Finding the Fourth Proportional to 426,116.70, 638,883.45 and 201,584.70

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Solution

The fourth proportional to 426,116.70, 638,883.45 and 201,584.70 is: 302,239.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,116.70 : 638,883.45 = 201,584.70 : x
  2. Step 2: Convert to fraction form
    426,116.70/638,883.45 = 201,584.70/x
  3. Step 3: Cross multiply
    426,116.70x = 638,883.45 × 201,584.70
  4. Step 4: Simplify right side
    426,116.70x = 128,789,128,603.22
  5. Step 5: Solve for x
    x = 128,789,128,603.22/426,116.70
  6. Step 6: Final answer
    x = 302,239.10

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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.