Home / 258,746.09-387,996.20-90,245.93

Finding the Fourth Proportional to 258,746.09, 387,996.20 and 90,245.93

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Solution

The fourth proportional to 258,746.09, 387,996.20 and 90,245.93 is: 135,326.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,746.09 : 387,996.20 = 90,245.93 : x
  2. Step 2: Convert to fraction form
    258,746.09/387,996.20 = 90,245.93/x
  3. Step 3: Cross multiply
    258,746.09x = 387,996.20 × 90,245.93
  4. Step 4: Simplify right side
    258,746.09x = 35,015,075,514.26
  5. Step 5: Solve for x
    x = 35,015,075,514.26/258,746.09
  6. Step 6: Final answer
    x = 135,326.01

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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.