Home / 268,239.31-402,421.24-78,692.02

Finding the Fourth Proportional to 268,239.31, 402,421.24 and 78,692.02

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Solution

The fourth proportional to 268,239.31, 402,421.24 and 78,692.02 is: 118,056.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,239.31 : 402,421.24 = 78,692.02 : x
  2. Step 2: Convert to fraction form
    268,239.31/402,421.24 = 78,692.02/x
  3. Step 3: Cross multiply
    268,239.31x = 402,421.24 × 78,692.02
  4. Step 4: Simplify right side
    268,239.31x = 31,667,339,952.39
  5. Step 5: Solve for x
    x = 31,667,339,952.39/268,239.31
  6. Step 6: Final answer
    x = 118,056.30

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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.