Home / 211,319.75-317,104.02-78,292.76

Finding the Fourth Proportional to 211,319.75, 317,104.02 and 78,292.76

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Solution

The fourth proportional to 211,319.75, 317,104.02 and 78,292.76 is: 117,485.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,319.75 : 317,104.02 = 78,292.76 : x
  2. Step 2: Convert to fraction form
    211,319.75/317,104.02 = 78,292.76/x
  3. Step 3: Cross multiply
    211,319.75x = 317,104.02 × 78,292.76
  4. Step 4: Simplify right side
    211,319.75x = 24,826,947,347.38
  5. Step 5: Solve for x
    x = 24,826,947,347.38/211,319.75
  6. Step 6: Final answer
    x = 117,485.22

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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.