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Finding the Fourth Proportional to 312,018.85, 467,652.30 and 143,306.38

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Solution

The fourth proportional to 312,018.85, 467,652.30 and 143,306.38 is: 214,786.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,018.85 : 467,652.30 = 143,306.38 : x
  2. Step 2: Convert to fraction form
    312,018.85/467,652.30 = 143,306.38/x
  3. Step 3: Cross multiply
    312,018.85x = 467,652.30 × 143,306.38
  4. Step 4: Simplify right side
    312,018.85x = 67,017,558,211.67
  5. Step 5: Solve for x
    x = 67,017,558,211.67/312,018.85
  6. Step 6: Final answer
    x = 214,786.89

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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.