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Finding the Fourth Proportional to 279,266.94, 385,389.99 and 151,943.40

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Solution

The fourth proportional to 279,266.94, 385,389.99 and 151,943.40 is: 209,682.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,266.94 : 385,389.99 = 151,943.40 : x
  2. Step 2: Convert to fraction form
    279,266.94/385,389.99 = 151,943.40/x
  3. Step 3: Cross multiply
    279,266.94x = 385,389.99 × 151,943.40
  4. Step 4: Simplify right side
    279,266.94x = 58,557,465,406.57
  5. Step 5: Solve for x
    x = 58,557,465,406.57/279,266.94
  6. Step 6: Final answer
    x = 209,682.77

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.