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Finding the Fourth Proportional to 395,012.67, 545,384.64 and 259,277.32

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Solution

The fourth proportional to 395,012.67, 545,384.64 and 259,277.32 is: 357,978.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,012.67 : 545,384.64 = 259,277.32 : x
  2. Step 2: Convert to fraction form
    395,012.67/545,384.64 = 259,277.32/x
  3. Step 3: Cross multiply
    395,012.67x = 545,384.64 × 259,277.32
  4. Step 4: Simplify right side
    395,012.67x = 141,405,867,828.37
  5. Step 5: Solve for x
    x = 141,405,867,828.37/395,012.67
  6. Step 6: Final answer
    x = 357,978.06

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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.