Home / 278,950.02-418,104.26-128,875.04

Finding the Fourth Proportional to 278,950.02, 418,104.26 and 128,875.04

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Solution

The fourth proportional to 278,950.02, 418,104.26 and 128,875.04 is: 193,164.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,950.02 : 418,104.26 = 128,875.04 : x
  2. Step 2: Convert to fraction form
    278,950.02/418,104.26 = 128,875.04/x
  3. Step 3: Cross multiply
    278,950.02x = 418,104.26 × 128,875.04
  4. Step 4: Simplify right side
    278,950.02x = 53,883,203,231.67
  5. Step 5: Solve for x
    x = 53,883,203,231.67/278,950.02
  6. Step 6: Final answer
    x = 193,164.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.