Home / 390,629.36-585,892.20-110,169.20

Finding the Fourth Proportional to 390,629.36, 585,892.20 and 110,169.20

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Solution

The fourth proportional to 390,629.36, 585,892.20 and 110,169.20 is: 165,239.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,629.36 : 585,892.20 = 110,169.20 : x
  2. Step 2: Convert to fraction form
    390,629.36/585,892.20 = 110,169.20/x
  3. Step 3: Cross multiply
    390,629.36x = 585,892.20 × 110,169.20
  4. Step 4: Simplify right side
    390,629.36x = 64,547,274,960.24
  5. Step 5: Solve for x
    x = 64,547,274,960.24/390,629.36
  6. Step 6: Final answer
    x = 165,239.18

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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.