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Finding the Fourth Proportional to 236,837.20, 355,255.80 and 211,032.40

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Solution

The fourth proportional to 236,837.20, 355,255.80 and 211,032.40 is: 316,548.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,837.20 : 355,255.80 = 211,032.40 : x
  2. Step 2: Convert to fraction form
    236,837.20/355,255.80 = 211,032.40/x
  3. Step 3: Cross multiply
    236,837.20x = 355,255.80 × 211,032.40
  4. Step 4: Simplify right side
    236,837.20x = 74,970,484,087.92
  5. Step 5: Solve for x
    x = 74,970,484,087.92/236,837.20
  6. Step 6: Final answer
    x = 316,548.60

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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.