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Finding the Fourth Proportional to 395,395.98, 545,779.53 and 240,346.73

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Solution

The fourth proportional to 395,395.98, 545,779.53 and 240,346.73 is: 331,759.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,395.98 : 545,779.53 = 240,346.73 : x
  2. Step 2: Convert to fraction form
    395,395.98/545,779.53 = 240,346.73/x
  3. Step 3: Cross multiply
    395,395.98x = 545,779.53 × 240,346.73
  4. Step 4: Simplify right side
    395,395.98x = 131,176,322,607.54
  5. Step 5: Solve for x
    x = 131,176,322,607.54/395,395.98
  6. Step 6: Final answer
    x = 331,759.37

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1.5x scale

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.