Home / 258,203.12-387,344.04-131,774.32

Finding the Fourth Proportional to 258,203.12, 387,344.04 and 131,774.32

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Solution

The fourth proportional to 258,203.12, 387,344.04 and 131,774.32 is: 197,681.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,203.12 : 387,344.04 = 131,774.32 : x
  2. Step 2: Convert to fraction form
    258,203.12/387,344.04 = 131,774.32/x
  3. Step 3: Cross multiply
    258,203.12x = 387,344.04 × 131,774.32
  4. Step 4: Simplify right side
    258,203.12x = 51,041,997,477.05
  5. Step 5: Solve for x
    x = 51,041,997,477.05/258,203.12
  6. Step 6: Final answer
    x = 197,681.57

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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.