Home / 208,539.77-312,853.40-90,227.93

Finding the Fourth Proportional to 208,539.77, 312,853.40 and 90,227.93

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Solution

The fourth proportional to 208,539.77, 312,853.40 and 90,227.93 is: 135,360.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,539.77 : 312,853.40 = 90,227.93 : x
  2. Step 2: Convert to fraction form
    208,539.77/312,853.40 = 90,227.93/x
  3. Step 3: Cross multiply
    208,539.77x = 312,853.40 × 90,227.93
  4. Step 4: Simplify right side
    208,539.77x = 28,228,114,675.46
  5. Step 5: Solve for x
    x = 28,228,114,675.46/208,539.77
  6. Step 6: Final answer
    x = 135,360.82

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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.