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Finding the Fourth Proportional to 383,061.51, 528,614.06 and 208,627.77

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Solution

The fourth proportional to 383,061.51, 528,614.06 and 208,627.77 is: 287,900.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,061.51 : 528,614.06 = 208,627.77 : x
  2. Step 2: Convert to fraction form
    383,061.51/528,614.06 = 208,627.77/x
  3. Step 3: Cross multiply
    383,061.51x = 528,614.06 × 208,627.77
  4. Step 4: Simplify right side
    383,061.51x = 110,283,571,080.92
  5. Step 5: Solve for x
    x = 110,283,571,080.92/383,061.51
  6. Step 6: Final answer
    x = 287,900.42

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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.