Home / 280,858.10-387,586.75-159,997.59

Finding the Fourth Proportional to 280,858.10, 387,586.75 and 159,997.59

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Solution

The fourth proportional to 280,858.10, 387,586.75 and 159,997.59 is: 220,798.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,858.10 : 387,586.75 = 159,997.59 : x
  2. Step 2: Convert to fraction form
    280,858.10/387,586.75 = 159,997.59/x
  3. Step 3: Cross multiply
    280,858.10x = 387,586.75 × 159,997.59
  4. Step 4: Simplify right side
    280,858.10x = 62,012,945,915.93
  5. Step 5: Solve for x
    x = 62,012,945,915.93/280,858.10
  6. Step 6: Final answer
    x = 220,798.14

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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.