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Finding the Fourth Proportional to 391,963, 540,893.28 and 230,824.84

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Solution

The fourth proportional to 391,963, 540,893.28 and 230,824.84 is: 318,529.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,963 : 540,893.28 = 230,824.84 : x
  2. Step 2: Convert to fraction form
    391,963/540,893.28 = 230,824.84/x
  3. Step 3: Cross multiply
    391,963x = 540,893.28 × 230,824.84
  4. Step 4: Simplify right side
    391,963x = 124,851,604,813.08
  5. Step 5: Solve for x
    x = 124,851,604,813.08/391,963
  6. Step 6: Final answer
    x = 318,529.06

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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.