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Finding the Fourth Proportional to 391,770.79, 587,656.32 and 107,464.30

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Solution

The fourth proportional to 391,770.79, 587,656.32 and 107,464.30 is: 161,196.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,770.79 : 587,656.32 = 107,464.30 : x
  2. Step 2: Convert to fraction form
    391,770.79/587,656.32 = 107,464.30/x
  3. Step 3: Cross multiply
    391,770.79x = 587,656.32 × 107,464.30
  4. Step 4: Simplify right side
    391,770.79x = 63,152,075,069.38
  5. Step 5: Solve for x
    x = 63,152,075,069.38/391,770.79
  6. Step 6: Final answer
    x = 161,196.49

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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.