Home / 256,911.19-385,403.70-79,432.04

Finding the Fourth Proportional to 256,911.19, 385,403.70 and 79,432.04

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Solution

The fourth proportional to 256,911.19, 385,403.70 and 79,432.04 is: 119,159.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,911.19 : 385,403.70 = 79,432.04 : x
  2. Step 2: Convert to fraction form
    256,911.19/385,403.70 = 79,432.04/x
  3. Step 3: Cross multiply
    256,911.19x = 385,403.70 × 79,432.04
  4. Step 4: Simplify right side
    256,911.19x = 30,613,400,386.11
  5. Step 5: Solve for x
    x = 30,613,400,386.11/256,911.19
  6. Step 6: Final answer
    x = 119,159.47

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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.