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Finding the Fourth Proportional to 255,048,612.80, 382,006,048.80 and 221,036,388.80

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Solution

The fourth proportional to 255,048,612.80, 382,006,048.80 and 221,036,388.80 is: 331,063,308.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,048,612.80 : 382,006,048.80 = 221,036,388.80 : x
  2. Step 2: Convert to fraction form
    255,048,612.80/382,006,048.80 = 221,036,388.80/x
  3. Step 3: Cross multiply
    255,048,612.80x = 382,006,048.80 × 221,036,388.80
  4. Step 4: Simplify right side
    255,048,612.80x = 84,437,237,526,508,576
  5. Step 5: Solve for x
    x = 84,437,237,526,508,576/255,048,612.80
  6. Step 6: Final answer
    x = 331,063,308.28

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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.