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Finding the Fourth Proportional to 287,112.54, 396,126.12 and 162,913.14

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Solution

The fourth proportional to 287,112.54, 396,126.12 and 162,913.14 is: 224,769.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,112.54 : 396,126.12 = 162,913.14 : x
  2. Step 2: Convert to fraction form
    287,112.54/396,126.12 = 162,913.14/x
  3. Step 3: Cross multiply
    287,112.54x = 396,126.12 × 162,913.14
  4. Step 4: Simplify right side
    287,112.54x = 64,534,150,045.22
  5. Step 5: Solve for x
    x = 64,534,150,045.22/287,112.54
  6. Step 6: Final answer
    x = 224,769.53

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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.