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Finding the Fourth Proportional to 359,164.80, 538,401.60 and 279,158.40

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Solution

The fourth proportional to 359,164.80, 538,401.60 and 279,158.40 is: 418,468.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,164.80 : 538,401.60 = 279,158.40 : x
  2. Step 2: Convert to fraction form
    359,164.80/538,401.60 = 279,158.40/x
  3. Step 3: Cross multiply
    359,164.80x = 538,401.60 × 279,158.40
  4. Step 4: Simplify right side
    359,164.80x = 150,299,329,213.44
  5. Step 5: Solve for x
    x = 150,299,329,213.44/359,164.80
  6. Step 6: Final answer
    x = 418,468.98

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1.5x scale

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.