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Finding the Fourth Proportional to 510,449.34, 765,668.78 and 131,368.58

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Solution

The fourth proportional to 510,449.34, 765,668.78 and 131,368.58 is: 197,051.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    510,449.34 : 765,668.78 = 131,368.58 : x
  2. Step 2: Convert to fraction form
    510,449.34/765,668.78 = 131,368.58/x
  3. Step 3: Cross multiply
    510,449.34x = 765,668.78 × 131,368.58
  4. Step 4: Simplify right side
    510,449.34x = 100,584,824,303.47
  5. Step 5: Solve for x
    x = 100,584,824,303.47/510,449.34
  6. Step 6: Final answer
    x = 197,051.53

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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.