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Finding the Fourth Proportional to 310,252.92, 428,188.62 and 189,368.34

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Solution

The fourth proportional to 310,252.92, 428,188.62 and 189,368.34 is: 261,352.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,252.92 : 428,188.62 = 189,368.34 : x
  2. Step 2: Convert to fraction form
    310,252.92/428,188.62 = 189,368.34/x
  3. Step 3: Cross multiply
    310,252.92x = 428,188.62 × 189,368.34
  4. Step 4: Simplify right side
    310,252.92x = 81,085,368,176.29
  5. Step 5: Solve for x
    x = 81,085,368,176.29/310,252.92
  6. Step 6: Final answer
    x = 261,352.47

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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.