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Finding the Fourth Proportional to 239,779.72, 330,692.88 and 144,268.58

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Solution

The fourth proportional to 239,779.72, 330,692.88 and 144,268.58 is: 198,968.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,779.72 : 330,692.88 = 144,268.58 : x
  2. Step 2: Convert to fraction form
    239,779.72/330,692.88 = 144,268.58/x
  3. Step 3: Cross multiply
    239,779.72x = 330,692.88 × 144,268.58
  4. Step 4: Simplify right side
    239,779.72x = 47,708,592,213.71
  5. Step 5: Solve for x
    x = 47,708,592,213.71/239,779.72
  6. Step 6: Final answer
    x = 198,968.42

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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.