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Finding the Fourth Proportional to 370,699.09, 556,114.22 and 139,883.11

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Solution

The fourth proportional to 370,699.09, 556,114.22 and 139,883.11 is: 209,849.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,699.09 : 556,114.22 = 139,883.11 : x
  2. Step 2: Convert to fraction form
    370,699.09/556,114.22 = 139,883.11/x
  3. Step 3: Cross multiply
    370,699.09x = 556,114.22 × 139,883.11
  4. Step 4: Simplify right side
    370,699.09x = 77,790,986,608.82
  5. Step 5: Solve for x
    x = 77,790,986,608.82/370,699.09
  6. Step 6: Final answer
    x = 209,849.41

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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.