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Finding the Fourth Proportional to 259,051.80, 388,577.70 and 72,063.30

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Solution

The fourth proportional to 259,051.80, 388,577.70 and 72,063.30 is: 108,094.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,051.80 : 388,577.70 = 72,063.30 : x
  2. Step 2: Convert to fraction form
    259,051.80/388,577.70 = 72,063.30/x
  3. Step 3: Cross multiply
    259,051.80x = 388,577.70 × 72,063.30
  4. Step 4: Simplify right side
    259,051.80x = 28,002,191,368.41
  5. Step 5: Solve for x
    x = 28,002,191,368.41/259,051.80
  6. Step 6: Final answer
    x = 108,094.95

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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.