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Finding the Fourth Proportional to 236,618.40, 355,186.80 and 131,642.40

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Solution

The fourth proportional to 236,618.40, 355,186.80 and 131,642.40 is: 197,607.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,618.40 : 355,186.80 = 131,642.40 : x
  2. Step 2: Convert to fraction form
    236,618.40/355,186.80 = 131,642.40/x
  3. Step 3: Cross multiply
    236,618.40x = 355,186.80 × 131,642.40
  4. Step 4: Simplify right side
    236,618.40x = 46,757,642,800.32
  5. Step 5: Solve for x
    x = 46,757,642,800.32/236,618.40
  6. Step 6: Final answer
    x = 197,607.81

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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.