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Finding the Fourth Proportional to 436,964.50, 655,482.31 and 121,421.42

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Solution

The fourth proportional to 436,964.50, 655,482.31 and 121,421.42 is: 182,142.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,964.50 : 655,482.31 = 121,421.42 : x
  2. Step 2: Convert to fraction form
    436,964.50/655,482.31 = 121,421.42/x
  3. Step 3: Cross multiply
    436,964.50x = 655,482.31 × 121,421.42
  4. Step 4: Simplify right side
    436,964.50x = 79,589,592,865.08
  5. Step 5: Solve for x
    x = 79,589,592,865.08/436,964.50
  6. Step 6: Final answer
    x = 182,142.01

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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.