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Finding the Fourth Proportional to 212,040, 318,041.33 and 127,230.84

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Solution

The fourth proportional to 212,040, 318,041.33 and 127,230.84 is: 190,835.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,040 : 318,041.33 = 127,230.84 : x
  2. Step 2: Convert to fraction form
    212,040/318,041.33 = 127,230.84/x
  3. Step 3: Cross multiply
    212,040x = 318,041.33 × 127,230.84
  4. Step 4: Simplify right side
    212,040x = 40,464,664,934.46
  5. Step 5: Solve for x
    x = 40,464,664,934.46/212,040
  6. Step 6: Final answer
    x = 190,835.05

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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.