Home / 319,415.57-479,189.48-129,875.96

Finding the Fourth Proportional to 319,415.57, 479,189.48 and 129,875.96

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Solution

The fourth proportional to 319,415.57, 479,189.48 and 129,875.96 is: 194,840.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,415.57 : 479,189.48 = 129,875.96 : x
  2. Step 2: Convert to fraction form
    319,415.57/479,189.48 = 129,875.96/x
  3. Step 3: Cross multiply
    319,415.57x = 479,189.48 × 129,875.96
  4. Step 4: Simplify right side
    319,415.57x = 62,235,193,736.90
  5. Step 5: Solve for x
    x = 62,235,193,736.90/319,415.57
  6. Step 6: Final answer
    x = 194,840.83

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1.5x scale

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.