Home / 256,964.18-385,457.06-79,474.55

Finding the Fourth Proportional to 256,964.18, 385,457.06 and 79,474.55

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Solution

The fourth proportional to 256,964.18, 385,457.06 and 79,474.55 is: 119,215.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,964.18 : 385,457.06 = 79,474.55 : x
  2. Step 2: Convert to fraction form
    256,964.18/385,457.06 = 79,474.55/x
  3. Step 3: Cross multiply
    256,964.18x = 385,457.06 × 79,474.55
  4. Step 4: Simplify right side
    256,964.18x = 30,634,024,063.17
  5. Step 5: Solve for x
    x = 30,634,024,063.17/256,964.18
  6. Step 6: Final answer
    x = 119,215.16

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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.