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Finding the Fourth Proportional to 280,190.70, 386,662.73 and 152,866.31

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Solution

The fourth proportional to 280,190.70, 386,662.73 and 152,866.31 is: 210,955.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,190.70 : 386,662.73 = 152,866.31 : x
  2. Step 2: Convert to fraction form
    280,190.70/386,662.73 = 152,866.31/x
  3. Step 3: Cross multiply
    280,190.70x = 386,662.73 × 152,866.31
  4. Step 4: Simplify right side
    280,190.70x = 59,107,702,051.98
  5. Step 5: Solve for x
    x = 59,107,702,051.98/280,190.70
  6. Step 6: Final answer
    x = 210,955.26

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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.