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Finding the Fourth Proportional to 389,044.53, 537,060.74 and 274,416.57

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Solution

The fourth proportional to 389,044.53, 537,060.74 and 274,416.57 is: 378,821.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,044.53 : 537,060.74 = 274,416.57 : x
  2. Step 2: Convert to fraction form
    389,044.53/537,060.74 = 274,416.57/x
  3. Step 3: Cross multiply
    389,044.53x = 537,060.74 × 274,416.57
  4. Step 4: Simplify right side
    389,044.53x = 147,378,364,780.38
  5. Step 5: Solve for x
    x = 147,378,364,780.38/389,044.53
  6. Step 6: Final answer
    x = 378,821.33

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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.