Home / 256,487.08-384,712.39-78,975.58

Finding the Fourth Proportional to 256,487.08, 384,712.39 and 78,975.58

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Solution

The fourth proportional to 256,487.08, 384,712.39 and 78,975.58 is: 118,457.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,487.08 : 384,712.39 = 78,975.58 : x
  2. Step 2: Convert to fraction form
    256,487.08/384,712.39 = 78,975.58/x
  3. Step 3: Cross multiply
    256,487.08x = 384,712.39 × 78,975.58
  4. Step 4: Simplify right side
    256,487.08x = 30,382,884,133.44
  5. Step 5: Solve for x
    x = 30,382,884,133.44/256,487.08
  6. Step 6: Final answer
    x = 118,457.76

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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.