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Finding the Fourth Proportional to 370,698.09, 556,112.72 and 139,882.11

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Solution

The fourth proportional to 370,698.09, 556,112.72 and 139,882.11 is: 209,847.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,698.09 : 556,112.72 = 139,882.11 : x
  2. Step 2: Convert to fraction form
    370,698.09/556,112.72 = 139,882.11/x
  3. Step 3: Cross multiply
    370,698.09x = 556,112.72 × 139,882.11
  4. Step 4: Simplify right side
    370,698.09x = 77,790,221,021.14
  5. Step 5: Solve for x
    x = 77,790,221,021.14/370,698.09
  6. Step 6: Final answer
    x = 209,847.91

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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.