Home / 385,714.16-578,609.30-132,961.35

Finding the Fourth Proportional to 385,714.16, 578,609.30 and 132,961.35

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Solution

The fourth proportional to 385,714.16, 578,609.30 and 132,961.35 is: 199,455.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,714.16 : 578,609.30 = 132,961.35 : x
  2. Step 2: Convert to fraction form
    385,714.16/578,609.30 = 132,961.35/x
  3. Step 3: Cross multiply
    385,714.16x = 578,609.30 × 132,961.35
  4. Step 4: Simplify right side
    385,714.16x = 76,932,673,650.56
  5. Step 5: Solve for x
    x = 76,932,673,650.56/385,714.16
  6. Step 6: Final answer
    x = 199,455.14

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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.