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Finding the Fourth Proportional to 285,169.83, 393,507.45 and 170,425.65

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Solution

The fourth proportional to 285,169.83, 393,507.45 and 170,425.65 is: 235,171.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,169.83 : 393,507.45 = 170,425.65 : x
  2. Step 2: Convert to fraction form
    285,169.83/393,507.45 = 170,425.65/x
  3. Step 3: Cross multiply
    285,169.83x = 393,507.45 × 170,425.65
  4. Step 4: Simplify right side
    285,169.83x = 67,063,762,946.09
  5. Step 5: Solve for x
    x = 67,063,762,946.09/285,169.83
  6. Step 6: Final answer
    x = 235,171.31

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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.