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Finding the Fourth Proportional to 252,013.40, 347,779.50 and 138,836.60

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Solution

The fourth proportional to 252,013.40, 347,779.50 and 138,836.60 is: 191,595.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,013.40 : 347,779.50 = 138,836.60 : x
  2. Step 2: Convert to fraction form
    252,013.40/347,779.50 = 138,836.60/x
  3. Step 3: Cross multiply
    252,013.40x = 347,779.50 × 138,836.60
  4. Step 4: Simplify right side
    252,013.40x = 48,284,523,329.70
  5. Step 5: Solve for x
    x = 48,284,523,329.70/252,013.40
  6. Step 6: Final answer
    x = 191,595.06

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1.5x scale

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.