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Finding the Fourth Proportional to 285,262.66, 393,668.58 and 156,206.62

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Solution

The fourth proportional to 285,262.66, 393,668.58 and 156,206.62 is: 215,568.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,262.66 : 393,668.58 = 156,206.62 : x
  2. Step 2: Convert to fraction form
    285,262.66/393,668.58 = 156,206.62/x
  3. Step 3: Cross multiply
    285,262.66x = 393,668.58 × 156,206.62
  4. Step 4: Simplify right side
    285,262.66x = 61,493,638,282.00
  5. Step 5: Solve for x
    x = 61,493,638,282.00/285,262.66
  6. Step 6: Final answer
    x = 215,568.48

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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.