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Finding the Fourth Proportional to 230,526.80, 345,838.80 and 72,771.20

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Solution

The fourth proportional to 230,526.80, 345,838.80 and 72,771.20 is: 109,172.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,526.80 : 345,838.80 = 72,771.20 : x
  2. Step 2: Convert to fraction form
    230,526.80/345,838.80 = 72,771.20/x
  3. Step 3: Cross multiply
    230,526.80x = 345,838.80 × 72,771.20
  4. Step 4: Simplify right side
    230,526.80x = 25,167,104,482.56
  5. Step 5: Solve for x
    x = 25,167,104,482.56/230,526.80
  6. Step 6: Final answer
    x = 109,172.14

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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.