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Finding the Fourth Proportional to 436,373.28, 654,485.76 and 120,756.42

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Solution

The fourth proportional to 436,373.28, 654,485.76 and 120,756.42 is: 181,114.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,373.28 : 654,485.76 = 120,756.42 : x
  2. Step 2: Convert to fraction form
    436,373.28/654,485.76 = 120,756.42/x
  3. Step 3: Cross multiply
    436,373.28x = 654,485.76 × 120,756.42
  4. Step 4: Simplify right side
    436,373.28x = 79,033,357,318.58
  5. Step 5: Solve for x
    x = 79,033,357,318.58/436,373.28
  6. Step 6: Final answer
    x = 181,114.11

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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.