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Finding the Fourth Proportional to 399,999.63, 552,016.64 and 218,700.74

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Solution

The fourth proportional to 399,999.63, 552,016.64 and 218,700.74 is: 301,816.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,999.63 : 552,016.64 = 218,700.74 : x
  2. Step 2: Convert to fraction form
    399,999.63/552,016.64 = 218,700.74/x
  3. Step 3: Cross multiply
    399,999.63x = 552,016.64 × 218,700.74
  4. Step 4: Simplify right side
    399,999.63x = 120,726,449,587.11
  5. Step 5: Solve for x
    x = 120,726,449,587.11/399,999.63
  6. Step 6: Final answer
    x = 301,816.40

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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.