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Finding the Fourth Proportional to 471,647.21, 650,872.16 and 256,785.39

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Solution

The fourth proportional to 471,647.21, 650,872.16 and 256,785.39 is: 354,363.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    471,647.21 : 650,872.16 = 256,785.39 : x
  2. Step 2: Convert to fraction form
    471,647.21/650,872.16 = 256,785.39/x
  3. Step 3: Cross multiply
    471,647.21x = 650,872.16 × 256,785.39
  4. Step 4: Simplify right side
    471,647.21x = 167,134,461,124.76
  5. Step 5: Solve for x
    x = 167,134,461,124.76/471,647.21
  6. Step 6: Final answer
    x = 354,363.30

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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.