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Finding the Fourth Proportional to 324,000.30, 486,000.45 and 272,678.70

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Solution

The fourth proportional to 324,000.30, 486,000.45 and 272,678.70 is: 409,018.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,000.30 : 486,000.45 = 272,678.70 : x
  2. Step 2: Convert to fraction form
    324,000.30/486,000.45 = 272,678.70/x
  3. Step 3: Cross multiply
    324,000.30x = 486,000.45 × 272,678.70
  4. Step 4: Simplify right side
    324,000.30x = 132,521,970,905.42
  5. Step 5: Solve for x
    x = 132,521,970,905.42/324,000.30
  6. Step 6: Final answer
    x = 409,018.05

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1.5x scale

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.