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Finding the Fourth Proportional to 540,899.07, 811,339.42 and 161,820.69

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Solution

The fourth proportional to 540,899.07, 811,339.42 and 161,820.69 is: 242,728.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,899.07 : 811,339.42 = 161,820.69 : x
  2. Step 2: Convert to fraction form
    540,899.07/811,339.42 = 161,820.69/x
  3. Step 3: Cross multiply
    540,899.07x = 811,339.42 × 161,820.69
  4. Step 4: Simplify right side
    540,899.07x = 131,291,504,768.60
  5. Step 5: Solve for x
    x = 131,291,504,768.60/540,899.07
  6. Step 6: Final answer
    x = 242,728.29

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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.