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Finding the Fourth Proportional to 492,748.80, 738,950.40 and 256,012.80

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Solution

The fourth proportional to 492,748.80, 738,950.40 and 256,012.80 is: 383,929.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,748.80 : 738,950.40 = 256,012.80 : x
  2. Step 2: Convert to fraction form
    492,748.80/738,950.40 = 256,012.80/x
  3. Step 3: Cross multiply
    492,748.80x = 738,950.40 × 256,012.80
  4. Step 4: Simplify right side
    492,748.80x = 189,180,760,965.12
  5. Step 5: Solve for x
    x = 189,180,760,965.12/492,748.80
  6. Step 6: Final answer
    x = 383,929.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.