Home / 256,282.30-384,429.53-78,790.92

Finding the Fourth Proportional to 256,282.30, 384,429.53 and 78,790.92

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Solution

The fourth proportional to 256,282.30, 384,429.53 and 78,790.92 is: 118,188.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,282.30 : 384,429.53 = 78,790.92 : x
  2. Step 2: Convert to fraction form
    256,282.30/384,429.53 = 78,790.92/x
  3. Step 3: Cross multiply
    256,282.30x = 384,429.53 × 78,790.92
  4. Step 4: Simplify right side
    256,282.30x = 30,289,556,343.87
  5. Step 5: Solve for x
    x = 30,289,556,343.87/256,282.30
  6. Step 6: Final answer
    x = 118,188.25

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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.