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Finding the Fourth Proportional to 236,806.40, 355,123.20 and 118,438.40

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Solution

The fourth proportional to 236,806.40, 355,123.20 and 118,438.40 is: 177,614.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,806.40 : 355,123.20 = 118,438.40 : x
  2. Step 2: Convert to fraction form
    236,806.40/355,123.20 = 118,438.40/x
  3. Step 3: Cross multiply
    236,806.40x = 355,123.20 × 118,438.40
  4. Step 4: Simplify right side
    236,806.40x = 42,060,223,610.88
  5. Step 5: Solve for x
    x = 42,060,223,610.88/236,806.40
  6. Step 6: Final answer
    x = 177,614.39

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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.