Home / 315,982.13-436,055.27-172,742.13

Finding the Fourth Proportional to 315,982.13, 436,055.27 and 172,742.13

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Solution

The fourth proportional to 315,982.13, 436,055.27 and 172,742.13 is: 238,384.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,982.13 : 436,055.27 = 172,742.13 : x
  2. Step 2: Convert to fraction form
    315,982.13/436,055.27 = 172,742.13/x
  3. Step 3: Cross multiply
    315,982.13x = 436,055.27 × 172,742.13
  4. Step 4: Simplify right side
    315,982.13x = 75,325,115,273.81
  5. Step 5: Solve for x
    x = 75,325,115,273.81/315,982.13
  6. Step 6: Final answer
    x = 238,384.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.