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Finding the Fourth Proportional to 400,447.16, 552,617.31 and 219,159.00

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Solution

The fourth proportional to 400,447.16, 552,617.31 and 219,159.00 is: 302,439.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,447.16 : 552,617.31 = 219,159.00 : x
  2. Step 2: Convert to fraction form
    400,447.16/552,617.31 = 219,159.00/x
  3. Step 3: Cross multiply
    400,447.16x = 552,617.31 × 219,159.00
  4. Step 4: Simplify right side
    400,447.16x = 121,111,059,936.45
  5. Step 5: Solve for x
    x = 121,111,059,936.45/400,447.16
  6. Step 6: Final answer
    x = 302,439.55

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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.