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Finding the Fourth Proportional to 395,690.66, 546,063.27 and 242,813.31

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Solution

The fourth proportional to 395,690.66, 546,063.27 and 242,813.31 is: 335,088.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,690.66 : 546,063.27 = 242,813.31 : x
  2. Step 2: Convert to fraction form
    395,690.66/546,063.27 = 242,813.31/x
  3. Step 3: Cross multiply
    395,690.66x = 546,063.27 × 242,813.31
  4. Step 4: Simplify right side
    395,690.66x = 132,591,430,058.12
  5. Step 5: Solve for x
    x = 132,591,430,058.12/395,690.66
  6. Step 6: Final answer
    x = 335,088.61

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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.