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Finding the Fourth Proportional to 280,273.96, 386,786.28 and 152,957.80

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Solution

The fourth proportional to 280,273.96, 386,786.28 and 152,957.80 is: 211,086.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,273.96 : 386,786.28 = 152,957.80 : x
  2. Step 2: Convert to fraction form
    280,273.96/386,786.28 = 152,957.80/x
  3. Step 3: Cross multiply
    280,273.96x = 386,786.28 × 152,957.80
  4. Step 4: Simplify right side
    280,273.96x = 59,161,978,458.98
  5. Step 5: Solve for x
    x = 59,161,978,458.98/280,273.96
  6. Step 6: Final answer
    x = 211,086.25

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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.