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Finding the Fourth Proportional to 279,448,440.80, 419,172,661.20 and 177,411,768.80

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Solution

The fourth proportional to 279,448,440.80, 419,172,661.20 and 177,411,768.80 is: 266,117,653.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,448,440.80 : 419,172,661.20 = 177,411,768.80 : x
  2. Step 2: Convert to fraction form
    279,448,440.80/419,172,661.20 = 177,411,768.80/x
  3. Step 3: Cross multiply
    279,448,440.80x = 419,172,661.20 × 177,411,768.80
  4. Step 4: Simplify right side
    279,448,440.80x = 74,366,163,256,095,136
  5. Step 5: Solve for x
    x = 74,366,163,256,095,136/279,448,440.80
  6. Step 6: Final answer
    x = 266,117,653.20

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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.