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Finding the Fourth Proportional to 255,099,208.80, 357,819,136.80 and 255,099,208.80

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Solution

The fourth proportional to 255,099,208.80, 357,819,136.80 and 255,099,208.80 is: 357,819,136.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,099,208.80 : 357,819,136.80 = 255,099,208.80 : x
  2. Step 2: Convert to fraction form
    255,099,208.80/357,819,136.80 = 255,099,208.80/x
  3. Step 3: Cross multiply
    255,099,208.80x = 357,819,136.80 × 255,099,208.80
  4. Step 4: Simplify right side
    255,099,208.80x = 91,279,378,691,178,976
  5. Step 5: Solve for x
    x = 91,279,378,691,178,976/255,099,208.80
  6. Step 6: Final answer
    x = 357,819,136.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.