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Finding the Fourth Proportional to 212,364.64, 318,546.64 and 145,602.37

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Solution

The fourth proportional to 212,364.64, 318,546.64 and 145,602.37 is: 218,403.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,364.64 : 318,546.64 = 145,602.37 : x
  2. Step 2: Convert to fraction form
    212,364.64/318,546.64 = 145,602.37/x
  3. Step 3: Cross multiply
    212,364.64x = 318,546.64 × 145,602.37
  4. Step 4: Simplify right side
    212,364.64x = 46,381,145,500.71
  5. Step 5: Solve for x
    x = 46,381,145,500.71/212,364.64
  6. Step 6: Final answer
    x = 218,403.33

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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.