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Finding the Fourth Proportional to 242,779.78, 335,079.38 and 152,213.38

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Solution

The fourth proportional to 242,779.78, 335,079.38 and 152,213.38 is: 210,081.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    242,779.78 : 335,079.38 = 152,213.38 : x
  2. Step 2: Convert to fraction form
    242,779.78/335,079.38 = 152,213.38/x
  3. Step 3: Cross multiply
    242,779.78x = 335,079.38 × 152,213.38
  4. Step 4: Simplify right side
    242,779.78x = 51,003,564,540.94
  5. Step 5: Solve for x
    x = 51,003,564,540.94/242,779.78
  6. Step 6: Final answer
    x = 210,081.60

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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.