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Finding the Fourth Proportional to 207,205.84, 310,860.48 and 72,271.85

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Solution

The fourth proportional to 207,205.84, 310,860.48 and 72,271.85 is: 108,425.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,205.84 : 310,860.48 = 72,271.85 : x
  2. Step 2: Convert to fraction form
    207,205.84/310,860.48 = 72,271.85/x
  3. Step 3: Cross multiply
    207,205.84x = 310,860.48 × 72,271.85
  4. Step 4: Simplify right side
    207,205.84x = 22,466,460,698.21
  5. Step 5: Solve for x
    x = 22,466,460,698.21/207,205.84
  6. Step 6: Final answer
    x = 108,425.81

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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.