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Finding the Fourth Proportional to 320,852.70, 481,279.05 and 305,300.70

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Solution

The fourth proportional to 320,852.70, 481,279.05 and 305,300.70 is: 457,951.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,852.70 : 481,279.05 = 305,300.70 : x
  2. Step 2: Convert to fraction form
    320,852.70/481,279.05 = 305,300.70/x
  3. Step 3: Cross multiply
    320,852.70x = 481,279.05 × 305,300.70
  4. Step 4: Simplify right side
    320,852.70x = 146,934,830,860.34
  5. Step 5: Solve for x
    x = 146,934,830,860.34/320,852.70
  6. Step 6: Final answer
    x = 457,951.05

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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.