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Finding the Fourth Proportional to 312,473.48, 468,732.14 and 125,485

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Solution

The fourth proportional to 312,473.48, 468,732.14 and 125,485 is: 188,236.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,473.48 : 468,732.14 = 125,485 : x
  2. Step 2: Convert to fraction form
    312,473.48/468,732.14 = 125,485/x
  3. Step 3: Cross multiply
    312,473.48x = 468,732.14 × 125,485
  4. Step 4: Simplify right side
    312,473.48x = 58,818,852,587.90
  5. Step 5: Solve for x
    x = 58,818,852,587.90/312,473.48
  6. Step 6: Final answer
    x = 188,236.30

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Why These Related Problems?

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