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Finding the Fourth Proportional to 255,802.78, 383,703.90 and 68,814.28

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Solution

The fourth proportional to 255,802.78, 383,703.90 and 68,814.28 is: 103,221.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,802.78 : 383,703.90 = 68,814.28 : x
  2. Step 2: Convert to fraction form
    255,802.78/383,703.90 = 68,814.28/x
  3. Step 3: Cross multiply
    255,802.78x = 383,703.90 × 68,814.28
  4. Step 4: Simplify right side
    255,802.78x = 26,404,307,611.69
  5. Step 5: Solve for x
    x = 26,404,307,611.69/255,802.78
  6. Step 6: Final answer
    x = 103,221.35

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1.5x scale

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.