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Finding the Fourth Proportional to 440,779.59, 661,146.30 and 120,908.03

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Solution

The fourth proportional to 440,779.59, 661,146.30 and 120,908.03 is: 181,355.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,779.59 : 661,146.30 = 120,908.03 : x
  2. Step 2: Convert to fraction form
    440,779.59/661,146.30 = 120,908.03/x
  3. Step 3: Cross multiply
    440,779.59x = 661,146.30 × 120,908.03
  4. Step 4: Simplify right side
    440,779.59x = 79,937,893,369.06
  5. Step 5: Solve for x
    x = 79,937,893,369.06/440,779.59
  6. Step 6: Final answer
    x = 181,355.71

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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.