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Finding the Fourth Proportional to 236,830.40, 355,245.60 and 217,476.80

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Solution

The fourth proportional to 236,830.40, 355,245.60 and 217,476.80 is: 326,215.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,830.40 : 355,245.60 = 217,476.80 : x
  2. Step 2: Convert to fraction form
    236,830.40/355,245.60 = 217,476.80/x
  3. Step 3: Cross multiply
    236,830.40x = 355,245.60 × 217,476.80
  4. Step 4: Simplify right side
    236,830.40x = 77,257,676,302.08
  5. Step 5: Solve for x
    x = 77,257,676,302.08/236,830.40
  6. Step 6: Final answer
    x = 326,215.20

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1.5x scale

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.