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Finding the Fourth Proportional to 236,999.40, 355,499.10 and 217,559.40

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Solution

The fourth proportional to 236,999.40, 355,499.10 and 217,559.40 is: 326,339.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,999.40 : 355,499.10 = 217,559.40 : x
  2. Step 2: Convert to fraction form
    236,999.40/355,499.10 = 217,559.40/x
  3. Step 3: Cross multiply
    236,999.40x = 355,499.10 × 217,559.40
  4. Step 4: Simplify right side
    236,999.40x = 77,342,170,896.54
  5. Step 5: Solve for x
    x = 77,342,170,896.54/236,999.40
  6. Step 6: Final answer
    x = 326,339.10

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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.