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Finding the Fourth Proportional to 427,484.37, 640,669.99 and 174,467.91

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Solution

The fourth proportional to 427,484.37, 640,669.99 and 174,467.91 is: 261,474.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,484.37 : 640,669.99 = 174,467.91 : x
  2. Step 2: Convert to fraction form
    427,484.37/640,669.99 = 174,467.91/x
  3. Step 3: Cross multiply
    427,484.37x = 640,669.99 × 174,467.91
  4. Step 4: Simplify right side
    427,484.37x = 111,776,354,155.02
  5. Step 5: Solve for x
    x = 111,776,354,155.02/427,484.37
  6. Step 6: Final answer
    x = 261,474.72

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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.