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Finding the Fourth Proportional to 305,441,924.16, 421,509,924.16 and 168,086,660.16

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Solution

The fourth proportional to 305,441,924.16, 421,509,924.16 and 168,086,660.16 is: 231,959,628.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,441,924.16 : 421,509,924.16 = 168,086,660.16 : x
  2. Step 2: Convert to fraction form
    305,441,924.16/421,509,924.16 = 168,086,660.16/x
  3. Step 3: Cross multiply
    305,441,924.16x = 421,509,924.16 × 168,086,660.16
  4. Step 4: Simplify right side
    305,441,924.16x = 70,850,195,376,349,296
  5. Step 5: Solve for x
    x = 70,850,195,376,349,296/305,441,924.16
  6. Step 6: Final answer
    x = 231,959,628.89

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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.