Home / 279,257.16-385,370.64-151,929.84

Finding the Fourth Proportional to 279,257.16, 385,370.64 and 151,929.84

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Solution

The fourth proportional to 279,257.16, 385,370.64 and 151,929.84 is: 209,660.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,257.16 : 385,370.64 = 151,929.84 : x
  2. Step 2: Convert to fraction form
    279,257.16/385,370.64 = 151,929.84/x
  3. Step 3: Cross multiply
    279,257.16x = 385,370.64 × 151,929.84
  4. Step 4: Simplify right side
    279,257.16x = 58,549,299,675.90
  5. Step 5: Solve for x
    x = 58,549,299,675.90/279,257.16
  6. Step 6: Final answer
    x = 209,660.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.