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Finding the Fourth Proportional to 389,043.84, 536,869.81 and 216,967.04

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Solution

The fourth proportional to 389,043.84, 536,869.81 and 216,967.04 is: 299,408.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,043.84 : 536,869.81 = 216,967.04 : x
  2. Step 2: Convert to fraction form
    389,043.84/536,869.81 = 216,967.04/x
  3. Step 3: Cross multiply
    389,043.84x = 536,869.81 × 216,967.04
  4. Step 4: Simplify right side
    389,043.84x = 116,483,049,771.88
  5. Step 5: Solve for x
    x = 116,483,049,771.88/389,043.84
  6. Step 6: Final answer
    x = 299,408.54

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1.5x scale

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.