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Finding the Fourth Proportional to 308,529.45, 462,828.20 and 98,118.18

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Solution

The fourth proportional to 308,529.45, 462,828.20 and 98,118.18 is: 147,188.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,529.45 : 462,828.20 = 98,118.18 : x
  2. Step 2: Convert to fraction form
    308,529.45/462,828.20 = 98,118.18/x
  3. Step 3: Cross multiply
    308,529.45x = 462,828.20 × 98,118.18
  4. Step 4: Simplify right side
    308,529.45x = 45,411,860,146.09
  5. Step 5: Solve for x
    x = 45,411,860,146.09/308,529.45
  6. Step 6: Final answer
    x = 147,188.09

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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.