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Finding the Fourth Proportional to 289,892.40, 435,713.40 and 251,401.20

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Solution

The fourth proportional to 289,892.40, 435,713.40 and 251,401.20 is: 377,860.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,892.40 : 435,713.40 = 251,401.20 : x
  2. Step 2: Convert to fraction form
    289,892.40/435,713.40 = 251,401.20/x
  3. Step 3: Cross multiply
    289,892.40x = 435,713.40 × 251,401.20
  4. Step 4: Simplify right side
    289,892.40x = 109,538,871,616.08
  5. Step 5: Solve for x
    x = 109,538,871,616.08/289,892.40
  6. Step 6: Final answer
    x = 377,860.45

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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.