Home / 211,666.24-317,445.60-78,472.96

Finding the Fourth Proportional to 211,666.24, 317,445.60 and 78,472.96

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Solution

The fourth proportional to 211,666.24, 317,445.60 and 78,472.96 is: 117,689.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,666.24 : 317,445.60 = 78,472.96 : x
  2. Step 2: Convert to fraction form
    211,666.24/317,445.60 = 78,472.96/x
  3. Step 3: Cross multiply
    211,666.24x = 317,445.60 × 78,472.96
  4. Step 4: Simplify right side
    211,666.24x = 24,910,895,870.98
  5. Step 5: Solve for x
    x = 24,910,895,870.98/211,666.24
  6. Step 6: Final answer
    x = 117,689.51

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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.