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Finding the Fourth Proportional to 389,041.84, 536,867.04 and 216,965.03

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Solution

The fourth proportional to 389,041.84, 536,867.04 and 216,965.03 is: 299,405.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,041.84 : 536,867.04 = 216,965.03 : x
  2. Step 2: Convert to fraction form
    389,041.84/536,867.04 = 216,965.03/x
  3. Step 3: Cross multiply
    389,041.84x = 536,867.04 × 216,965.03
  4. Step 4: Simplify right side
    389,041.84x = 116,481,374,781.78
  5. Step 5: Solve for x
    x = 116,481,374,781.78/389,041.84
  6. Step 6: Final answer
    x = 299,405.78

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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.