Home / 258,519.17-387,778.17-123,172.40

Finding the Fourth Proportional to 258,519.17, 387,778.17 and 123,172.40

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Solution

The fourth proportional to 258,519.17, 387,778.17 and 123,172.40 is: 184,758.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,519.17 : 387,778.17 = 123,172.40 : x
  2. Step 2: Convert to fraction form
    258,519.17/387,778.17 = 123,172.40/x
  3. Step 3: Cross multiply
    258,519.17x = 387,778.17 × 123,172.40
  4. Step 4: Simplify right side
    258,519.17x = 47,763,567,866.51
  5. Step 5: Solve for x
    x = 47,763,567,866.51/258,519.17
  6. Step 6: Final answer
    x = 184,758.32

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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.