Home / 258,526.50-387,786.86-100,865.68

Finding the Fourth Proportional to 258,526.50, 387,786.86 and 100,865.68

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Solution

The fourth proportional to 258,526.50, 387,786.86 and 100,865.68 is: 151,297.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,526.50 : 387,786.86 = 100,865.68 : x
  2. Step 2: Convert to fraction form
    258,526.50/387,786.86 = 100,865.68/x
  3. Step 3: Cross multiply
    258,526.50x = 387,786.86 × 100,865.68
  4. Step 4: Simplify right side
    258,526.50x = 39,114,385,328.96
  5. Step 5: Solve for x
    x = 39,114,385,328.96/258,526.50
  6. Step 6: Final answer
    x = 151,297.39

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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.