Home / 256,623.86-384,911.02-79,083.20

Finding the Fourth Proportional to 256,623.86, 384,911.02 and 79,083.20

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Solution

The fourth proportional to 256,623.86, 384,911.02 and 79,083.20 is: 118,617.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,623.86 : 384,911.02 = 79,083.20 : x
  2. Step 2: Convert to fraction form
    256,623.86/384,911.02 = 79,083.20/x
  3. Step 3: Cross multiply
    256,623.86x = 384,911.02 × 79,083.20
  4. Step 4: Simplify right side
    256,623.86x = 30,439,995,176.86
  5. Step 5: Solve for x
    x = 30,439,995,176.86/256,623.86
  6. Step 6: Final answer
    x = 118,617.17

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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.