Home / 386,725.60-579,742.80-253,669.60

Finding the Fourth Proportional to 386,725.60, 579,742.80 and 253,669.60

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Solution

The fourth proportional to 386,725.60, 579,742.80 and 253,669.60 is: 380,277.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,725.60 : 579,742.80 = 253,669.60 : x
  2. Step 2: Convert to fraction form
    386,725.60/579,742.80 = 253,669.60/x
  3. Step 3: Cross multiply
    386,725.60x = 579,742.80 × 253,669.60
  4. Step 4: Simplify right side
    386,725.60x = 147,063,124,178.88
  5. Step 5: Solve for x
    x = 147,063,124,178.88/386,725.60
  6. Step 6: Final answer
    x = 380,277.71

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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.