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Finding the Fourth Proportional to 395,318.35, 545,539.53 and 214,030.32

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Solution

The fourth proportional to 395,318.35, 545,539.53 and 214,030.32 is: 295,361.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,318.35 : 545,539.53 = 214,030.32 : x
  2. Step 2: Convert to fraction form
    395,318.35/545,539.53 = 214,030.32/x
  3. Step 3: Cross multiply
    395,318.35x = 545,539.53 × 214,030.32
  4. Step 4: Simplify right side
    395,318.35x = 116,762,000,178.55
  5. Step 5: Solve for x
    x = 116,762,000,178.55/395,318.35
  6. Step 6: Final answer
    x = 295,361.95

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.