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Finding the Fourth Proportional to 486,241.40, 729,143.40 and 186,622.40

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Solution

The fourth proportional to 486,241.40, 729,143.40 and 186,622.40 is: 279,849.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,241.40 : 729,143.40 = 186,622.40 : x
  2. Step 2: Convert to fraction form
    486,241.40/729,143.40 = 186,622.40/x
  3. Step 3: Cross multiply
    486,241.40x = 729,143.40 × 186,622.40
  4. Step 4: Simplify right side
    486,241.40x = 136,074,491,252.16
  5. Step 5: Solve for x
    x = 136,074,491,252.16/486,241.40
  6. Step 6: Final answer
    x = 279,849.66

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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.