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Finding the Fourth Proportional to 395,159.66, 545,381.73 and 259,586.31

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Solution

The fourth proportional to 395,159.66, 545,381.73 and 259,586.31 is: 358,269.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,159.66 : 545,381.73 = 259,586.31 : x
  2. Step 2: Convert to fraction form
    395,159.66/545,381.73 = 259,586.31/x
  3. Step 3: Cross multiply
    395,159.66x = 545,381.73 × 259,586.31
  4. Step 4: Simplify right side
    395,159.66x = 141,573,630,832.12
  5. Step 5: Solve for x
    x = 141,573,630,832.12/395,159.66
  6. Step 6: Final answer
    x = 358,269.45

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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.