Home / 256,456.20-385,145.10-248,161.80

Finding the Fourth Proportional to 256,456.20, 385,145.10 and 248,161.80

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Solution

The fourth proportional to 256,456.20, 385,145.10 and 248,161.80 is: 372,688.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,456.20 : 385,145.10 = 248,161.80 : x
  2. Step 2: Convert to fraction form
    256,456.20/385,145.10 = 248,161.80/x
  3. Step 3: Cross multiply
    256,456.20x = 385,145.10 × 248,161.80
  4. Step 4: Simplify right side
    256,456.20x = 95,578,301,277.18
  5. Step 5: Solve for x
    x = 95,578,301,277.18/256,456.20
  6. Step 6: Final answer
    x = 372,688.60

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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.