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Finding the Fourth Proportional to 282,268, 423,402 and 85,276

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Solution

The fourth proportional to 282,268, 423,402 and 85,276 is: 127,914

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,268 : 423,402 = 85,276 : x
  2. Step 2: Convert to fraction form
    282,268/423,402 = 85,276/x
  3. Step 3: Cross multiply
    282,268x = 423,402 × 85,276
  4. Step 4: Simplify right side
    282,268x = 36,106,028,952
  5. Step 5: Solve for x
    x = 36,106,028,952/282,268
  6. Step 6: Final answer
    x = 127,914

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.