Home / 256,862.30-385,185.02-76,973.24

Finding the Fourth Proportional to 256,862.30, 385,185.02 and 76,973.24

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Solution

The fourth proportional to 256,862.30, 385,185.02 and 76,973.24 is: 115,427.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,862.30 : 385,185.02 = 76,973.24 : x
  2. Step 2: Convert to fraction form
    256,862.30/385,185.02 = 76,973.24/x
  3. Step 3: Cross multiply
    256,862.30x = 385,185.02 × 76,973.24
  4. Step 4: Simplify right side
    256,862.30x = 29,648,938,988.86
  5. Step 5: Solve for x
    x = 29,648,938,988.86/256,862.30
  6. Step 6: Final answer
    x = 115,427.37

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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.