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Finding the Fourth Proportional to 252,779.85, 348,838.58 and 143,878.87

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Solution

The fourth proportional to 252,779.85, 348,838.58 and 143,878.87 is: 198,554.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,779.85 : 348,838.58 = 143,878.87 : x
  2. Step 2: Convert to fraction form
    252,779.85/348,838.58 = 143,878.87/x
  3. Step 3: Cross multiply
    252,779.85x = 348,838.58 × 143,878.87
  4. Step 4: Simplify right side
    252,779.85x = 50,190,499,111.31
  5. Step 5: Solve for x
    x = 50,190,499,111.31/252,779.85
  6. Step 6: Final answer
    x = 198,554.19

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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.