Home / 280,857.10-387,585.37-159,996.59

Finding the Fourth Proportional to 280,857.10, 387,585.37 and 159,996.59

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Solution

The fourth proportional to 280,857.10, 387,585.37 and 159,996.59 is: 220,796.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,857.10 : 387,585.37 = 159,996.59 : x
  2. Step 2: Convert to fraction form
    280,857.10/387,585.37 = 159,996.59/x
  3. Step 3: Cross multiply
    280,857.10x = 387,585.37 × 159,996.59
  4. Step 4: Simplify right side
    280,857.10x = 62,012,337,533.89
  5. Step 5: Solve for x
    x = 62,012,337,533.89/280,857.10
  6. Step 6: Final answer
    x = 220,796.76

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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.