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Finding the Fourth Proportional to 509,802.40, 765,286.80 and 299,558.80

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Solution

The fourth proportional to 509,802.40, 765,286.80 and 299,558.80 is: 449,680.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,802.40 : 765,286.80 = 299,558.80 : x
  2. Step 2: Convert to fraction form
    509,802.40/765,286.80 = 299,558.80/x
  3. Step 3: Cross multiply
    509,802.40x = 765,286.80 × 299,558.80
  4. Step 4: Simplify right side
    509,802.40x = 229,248,395,463.84
  5. Step 5: Solve for x
    x = 229,248,395,463.84/509,802.40
  6. Step 6: Final answer
    x = 449,680.89

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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.