Home / 399,331.38-551,088.64-218,054.82

Finding the Fourth Proportional to 399,331.38, 551,088.64 and 218,054.82

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Solution

The fourth proportional to 399,331.38, 551,088.64 and 218,054.82 is: 300,921.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,331.38 : 551,088.64 = 218,054.82 : x
  2. Step 2: Convert to fraction form
    399,331.38/551,088.64 = 218,054.82/x
  3. Step 3: Cross multiply
    399,331.38x = 551,088.64 × 218,054.82
  4. Step 4: Simplify right side
    399,331.38x = 120,167,534,199.25
  5. Step 5: Solve for x
    x = 120,167,534,199.25/399,331.38
  6. Step 6: Final answer
    x = 300,921.84

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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.