Home / 258,409.02-387,218.79-108,567.39

Finding the Fourth Proportional to 258,409.02, 387,218.79 and 108,567.39

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Solution

The fourth proportional to 258,409.02, 387,218.79 and 108,567.39 is: 162,685.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,409.02 : 387,218.79 = 108,567.39 : x
  2. Step 2: Convert to fraction form
    258,409.02/387,218.79 = 108,567.39/x
  3. Step 3: Cross multiply
    258,409.02x = 387,218.79 × 108,567.39
  4. Step 4: Simplify right side
    258,409.02x = 42,039,333,389.26
  5. Step 5: Solve for x
    x = 42,039,333,389.26/258,409.02
  6. Step 6: Final answer
    x = 162,685.24

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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.