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Finding the Fourth Proportional to 471,378.20, 650,500.70 and 256,518.20

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Solution

The fourth proportional to 471,378.20, 650,500.70 and 256,518.20 is: 353,994.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    471,378.20 : 650,500.70 = 256,518.20 : x
  2. Step 2: Convert to fraction form
    471,378.20/650,500.70 = 256,518.20/x
  3. Step 3: Cross multiply
    471,378.20x = 650,500.70 × 256,518.20
  4. Step 4: Simplify right side
    471,378.20x = 166,865,269,006.40
  5. Step 5: Solve for x
    x = 166,865,269,006.40/471,378.20
  6. Step 6: Final answer
    x = 353,994.46

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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.