Home / 256,276.45-384,451.42-78,798.36

Finding the Fourth Proportional to 256,276.45, 384,451.42 and 78,798.36

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Solution

The fourth proportional to 256,276.45, 384,451.42 and 78,798.36 is: 118,208.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,276.45 : 384,451.42 = 78,798.36 : x
  2. Step 2: Convert to fraction form
    256,276.45/384,451.42 = 78,798.36/x
  3. Step 3: Cross multiply
    256,276.45x = 384,451.42 × 78,798.36
  4. Step 4: Simplify right side
    256,276.45x = 30,294,141,395.67
  5. Step 5: Solve for x
    x = 30,294,141,395.67/256,276.45
  6. Step 6: Final answer
    x = 118,208.84

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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.