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Finding the Fourth Proportional to 245,117.65, 367,676.76 and 76,638.87

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Solution

The fourth proportional to 245,117.65, 367,676.76 and 76,638.87 is: 114,958.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,117.65 : 367,676.76 = 76,638.87 : x
  2. Step 2: Convert to fraction form
    245,117.65/367,676.76 = 76,638.87/x
  3. Step 3: Cross multiply
    245,117.65x = 367,676.76 × 76,638.87
  4. Step 4: Simplify right side
    245,117.65x = 28,178,331,411.66
  5. Step 5: Solve for x
    x = 28,178,331,411.66/245,117.65
  6. Step 6: Final answer
    x = 114,958.39

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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.