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Finding the Fourth Proportional to 427,483.37, 640,668.49 and 174,466.91

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Solution

The fourth proportional to 427,483.37, 640,668.49 and 174,466.91 is: 261,473.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,483.37 : 640,668.49 = 174,466.91 : x
  2. Step 2: Convert to fraction form
    427,483.37/640,668.49 = 174,466.91/x
  3. Step 3: Cross multiply
    427,483.37x = 640,668.49 × 174,466.91
  4. Step 4: Simplify right side
    427,483.37x = 111,775,452,950.17
  5. Step 5: Solve for x
    x = 111,775,452,950.17/427,483.37
  6. Step 6: Final answer
    x = 261,473.22

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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.