Home / 278,935.88-384,932-151,611.12

Finding the Fourth Proportional to 278,935.88, 384,932 and 151,611.12

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Solution

The fourth proportional to 278,935.88, 384,932 and 151,611.12 is: 209,223.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,935.88 : 384,932 = 151,611.12 : x
  2. Step 2: Convert to fraction form
    278,935.88/384,932 = 151,611.12/x
  3. Step 3: Cross multiply
    278,935.88x = 384,932 × 151,611.12
  4. Step 4: Simplify right side
    278,935.88x = 58,359,971,643.84
  5. Step 5: Solve for x
    x = 58,359,971,643.84/278,935.88
  6. Step 6: Final answer
    x = 209,223.61

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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.