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Finding the Fourth Proportional to 280,210.38, 386,747.88 and 171,333.33

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Solution

The fourth proportional to 280,210.38, 386,747.88 and 171,333.33 is: 236,475.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,210.38 : 386,747.88 = 171,333.33 : x
  2. Step 2: Convert to fraction form
    280,210.38/386,747.88 = 171,333.33/x
  3. Step 3: Cross multiply
    280,210.38x = 386,747.88 × 171,333.33
  4. Step 4: Simplify right side
    280,210.38x = 66,262,802,150.84
  5. Step 5: Solve for x
    x = 66,262,802,150.84/280,210.38
  6. Step 6: Final answer
    x = 236,475.19

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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.