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Finding the Fourth Proportional to 360,987.60, 498,006.45 and 217,668.03

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Solution

The fourth proportional to 360,987.60, 498,006.45 and 217,668.03 is: 300,287.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    360,987.60 : 498,006.45 = 217,668.03 : x
  2. Step 2: Convert to fraction form
    360,987.60/498,006.45 = 217,668.03/x
  3. Step 3: Cross multiply
    360,987.60x = 498,006.45 × 217,668.03
  4. Step 4: Simplify right side
    360,987.60x = 108,400,082,898.79
  5. Step 5: Solve for x
    x = 108,400,082,898.79/360,987.60
  6. Step 6: Final answer
    x = 300,287.55

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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.