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Finding the Fourth Proportional to 389,228.78, 536,675.52 and 274,526.30

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Solution

The fourth proportional to 389,228.78, 536,675.52 and 274,526.30 is: 378,521.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,228.78 : 536,675.52 = 274,526.30 : x
  2. Step 2: Convert to fraction form
    389,228.78/536,675.52 = 274,526.30/x
  3. Step 3: Cross multiply
    389,228.78x = 536,675.52 × 274,526.30
  4. Step 4: Simplify right side
    389,228.78x = 147,331,544,806.18
  5. Step 5: Solve for x
    x = 147,331,544,806.18/389,228.78
  6. Step 6: Final answer
    x = 378,521.71

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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.