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Finding the Fourth Proportional to 642,093.48, 886,080.06 and 370,161.90

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Solution

The fourth proportional to 642,093.48, 886,080.06 and 370,161.90 is: 510,818.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,093.48 : 886,080.06 = 370,161.90 : x
  2. Step 2: Convert to fraction form
    642,093.48/886,080.06 = 370,161.90/x
  3. Step 3: Cross multiply
    642,093.48x = 886,080.06 × 370,161.90
  4. Step 4: Simplify right side
    642,093.48x = 327,993,078,561.71
  5. Step 5: Solve for x
    x = 327,993,078,561.71/642,093.48
  6. Step 6: Final answer
    x = 510,818.27

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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.