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Finding the Fourth Proportional to 287,672.36, 397,034.64 and 173,066.84

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Solution

The fourth proportional to 287,672.36, 397,034.64 and 173,066.84 is: 238,860.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,672.36 : 397,034.64 = 173,066.84 : x
  2. Step 2: Convert to fraction form
    287,672.36/397,034.64 = 173,066.84/x
  3. Step 3: Cross multiply
    287,672.36x = 397,034.64 × 173,066.84
  4. Step 4: Simplify right side
    287,672.36x = 68,713,527,881.16
  5. Step 5: Solve for x
    x = 68,713,527,881.16/287,672.36
  6. Step 6: Final answer
    x = 238,860.38

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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.