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Finding the Fourth Proportional to 312,554.97, 431,326.98 and 169,314.66

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Solution

The fourth proportional to 312,554.97, 431,326.98 and 169,314.66 is: 233,654.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,554.97 : 431,326.98 = 169,314.66 : x
  2. Step 2: Convert to fraction form
    312,554.97/431,326.98 = 169,314.66/x
  3. Step 3: Cross multiply
    312,554.97x = 431,326.98 × 169,314.66
  4. Step 4: Simplify right side
    312,554.97x = 73,029,980,967.53
  5. Step 5: Solve for x
    x = 73,029,980,967.53/312,554.97
  6. Step 6: Final answer
    x = 233,654.84

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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.