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Finding the Fourth Proportional to 395,316.48, 545,788.08 and 259,591.26

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Solution

The fourth proportional to 395,316.48, 545,788.08 and 259,591.26 is: 358,400.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,316.48 : 545,788.08 = 259,591.26 : x
  2. Step 2: Convert to fraction form
    395,316.48/545,788.08 = 259,591.26/x
  3. Step 3: Cross multiply
    395,316.48x = 545,788.08 × 259,591.26
  4. Step 4: Simplify right side
    395,316.48x = 141,681,815,380.18
  5. Step 5: Solve for x
    x = 141,681,815,380.18/395,316.48
  6. Step 6: Final answer
    x = 358,400.98

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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.