Home / 216,209.95-324,206.05-72,064.72

Finding the Fourth Proportional to 216,209.95, 324,206.05 and 72,064.72

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Solution

The fourth proportional to 216,209.95, 324,206.05 and 72,064.72 is: 108,060.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,209.95 : 324,206.05 = 72,064.72 : x
  2. Step 2: Convert to fraction form
    216,209.95/324,206.05 = 72,064.72/x
  3. Step 3: Cross multiply
    216,209.95x = 324,206.05 × 72,064.72
  4. Step 4: Simplify right side
    216,209.95x = 23,363,818,373.09
  5. Step 5: Solve for x
    x = 23,363,818,373.09/216,209.95
  6. Step 6: Final answer
    x = 108,060.79

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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.