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Finding the Fourth Proportional to 280,927, 387,686.28 and 170,546.98

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Solution

The fourth proportional to 280,927, 387,686.28 and 170,546.98 is: 235,359.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,927 : 387,686.28 = 170,546.98 : x
  2. Step 2: Convert to fraction form
    280,927/387,686.28 = 170,546.98/x
  3. Step 3: Cross multiply
    280,927x = 387,686.28 × 170,546.98
  4. Step 4: Simplify right side
    280,927x = 66,118,724,241.43
  5. Step 5: Solve for x
    x = 66,118,724,241.43/280,927
  6. Step 6: Final answer
    x = 235,359.09

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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.