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Finding the Fourth Proportional to 236,689.78, 326,630.24 and 129,259.84

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Solution

The fourth proportional to 236,689.78, 326,630.24 and 129,259.84 is: 178,377.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,689.78 : 326,630.24 = 129,259.84 : x
  2. Step 2: Convert to fraction form
    236,689.78/326,630.24 = 129,259.84/x
  3. Step 3: Cross multiply
    236,689.78x = 326,630.24 × 129,259.84
  4. Step 4: Simplify right side
    236,689.78x = 42,220,171,915.26
  5. Step 5: Solve for x
    x = 42,220,171,915.26/236,689.78
  6. Step 6: Final answer
    x = 178,377.67

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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.