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Finding the Fourth Proportional to 400,720.64, 552,997.35 and 219,449.30

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Solution

The fourth proportional to 400,720.64, 552,997.35 and 219,449.30 is: 302,841.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,720.64 : 552,997.35 = 219,449.30 : x
  2. Step 2: Convert to fraction form
    400,720.64/552,997.35 = 219,449.30/x
  3. Step 3: Cross multiply
    400,720.64x = 552,997.35 × 219,449.30
  4. Step 4: Simplify right side
    400,720.64x = 121,354,878,594.37
  5. Step 5: Solve for x
    x = 121,354,878,594.37/400,720.64
  6. Step 6: Final answer
    x = 302,841.60

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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.