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Finding the Fourth Proportional to 508,818.37, 763,243.74 and 255,960.67

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Solution

The fourth proportional to 508,818.37, 763,243.74 and 255,960.67 is: 383,949.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,818.37 : 763,243.74 = 255,960.67 : x
  2. Step 2: Convert to fraction form
    508,818.37/763,243.74 = 255,960.67/x
  3. Step 3: Cross multiply
    508,818.37x = 763,243.74 × 255,960.67
  4. Step 4: Simplify right side
    508,818.37x = 195,360,379,063.71
  5. Step 5: Solve for x
    x = 195,360,379,063.71/508,818.37
  6. Step 6: Final answer
    x = 383,949.15

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Double scale
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Similar ratio
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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.