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Finding the Fourth Proportional to 395,239.35, 592,674.45 and 142,486.55

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Solution

The fourth proportional to 395,239.35, 592,674.45 and 142,486.55 is: 213,663.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,239.35 : 592,674.45 = 142,486.55 : x
  2. Step 2: Convert to fraction form
    395,239.35/592,674.45 = 142,486.55/x
  3. Step 3: Cross multiply
    395,239.35x = 592,674.45 × 142,486.55
  4. Step 4: Simplify right side
    395,239.35x = 84,448,137,653.65
  5. Step 5: Solve for x
    x = 84,448,137,653.65/395,239.35
  6. Step 6: Final answer
    x = 213,663.28

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.