Home / 459,138.60-688,707.90-272,514.60

Finding the Fourth Proportional to 459,138.60, 688,707.90 and 272,514.60

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Solution

The fourth proportional to 459,138.60, 688,707.90 and 272,514.60 is: 408,771.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,138.60 : 688,707.90 = 272,514.60 : x
  2. Step 2: Convert to fraction form
    459,138.60/688,707.90 = 272,514.60/x
  3. Step 3: Cross multiply
    459,138.60x = 688,707.90 × 272,514.60
  4. Step 4: Simplify right side
    459,138.60x = 187,682,957,885.34
  5. Step 5: Solve for x
    x = 187,682,957,885.34/459,138.60
  6. Step 6: Final answer
    x = 408,771.90

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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.