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Finding the Fourth Proportional to 335,087.64, 500,218.86 and 287,186.25

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Solution

The fourth proportional to 335,087.64, 500,218.86 and 287,186.25 is: 428,711.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    335,087.64 : 500,218.86 = 287,186.25 : x
  2. Step 2: Convert to fraction form
    335,087.64/500,218.86 = 287,186.25/x
  3. Step 3: Cross multiply
    335,087.64x = 500,218.86 × 287,186.25
  4. Step 4: Simplify right side
    335,087.64x = 143,655,978,582.68
  5. Step 5: Solve for x
    x = 143,655,978,582.68/335,087.64
  6. Step 6: Final answer
    x = 428,711.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.