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Finding the Fourth Proportional to 308,779.22, 463,103.88 and 87,111.38

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Solution

The fourth proportional to 308,779.22, 463,103.88 and 87,111.38 is: 130,648.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,779.22 : 463,103.88 = 87,111.38 : x
  2. Step 2: Convert to fraction form
    308,779.22/463,103.88 = 87,111.38/x
  3. Step 3: Cross multiply
    308,779.22x = 463,103.88 × 87,111.38
  4. Step 4: Simplify right side
    308,779.22x = 40,341,618,070.15
  5. Step 5: Solve for x
    x = 40,341,618,070.15/308,779.22
  6. Step 6: Final answer
    x = 130,648.75

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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.