Home / 390,109.14-585,174.65-190,589.13

Finding the Fourth Proportional to 390,109.14, 585,174.65 and 190,589.13

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Solution

The fourth proportional to 390,109.14, 585,174.65 and 190,589.13 is: 285,889.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,109.14 : 585,174.65 = 190,589.13 : x
  2. Step 2: Convert to fraction form
    390,109.14/585,174.65 = 190,589.13/x
  3. Step 3: Cross multiply
    390,109.14x = 585,174.65 × 190,589.13
  4. Step 4: Simplify right side
    390,109.14x = 111,527,926,488.61
  5. Step 5: Solve for x
    x = 111,527,926,488.61/390,109.14
  6. Step 6: Final answer
    x = 285,889.04

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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.