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Finding the Fourth Proportional to 309,032.16, 426,454.41 and 171,205.41

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Solution

The fourth proportional to 309,032.16, 426,454.41 and 171,205.41 is: 236,257.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,032.16 : 426,454.41 = 171,205.41 : x
  2. Step 2: Convert to fraction form
    309,032.16/426,454.41 = 171,205.41/x
  3. Step 3: Cross multiply
    309,032.16x = 426,454.41 × 171,205.41
  4. Step 4: Simplify right side
    309,032.16x = 73,011,302,110.36
  5. Step 5: Solve for x
    x = 73,011,302,110.36/309,032.16
  6. Step 6: Final answer
    x = 236,257.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.