Home / 208,320.91-312,416.89-75,184.31

Finding the Fourth Proportional to 208,320.91, 312,416.89 and 75,184.31

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Solution

The fourth proportional to 208,320.91, 312,416.89 and 75,184.31 is: 112,753.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,320.91 : 312,416.89 = 75,184.31 : x
  2. Step 2: Convert to fraction form
    208,320.91/312,416.89 = 75,184.31/x
  3. Step 3: Cross multiply
    208,320.91x = 312,416.89 × 75,184.31
  4. Step 4: Simplify right side
    208,320.91x = 23,488,848,307.00
  5. Step 5: Solve for x
    x = 23,488,848,307.00/208,320.91
  6. Step 6: Final answer
    x = 112,753.20

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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.