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Finding the Fourth Proportional to 305,519.40, 458,408.70 and 147,666.60

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Solution

The fourth proportional to 305,519.40, 458,408.70 and 147,666.60 is: 221,562.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,519.40 : 458,408.70 = 147,666.60 : x
  2. Step 2: Convert to fraction form
    305,519.40/458,408.70 = 147,666.60/x
  3. Step 3: Cross multiply
    305,519.40x = 458,408.70 × 147,666.60
  4. Step 4: Simplify right side
    305,519.40x = 67,691,654,139.42
  5. Step 5: Solve for x
    x = 67,691,654,139.42/305,519.40
  6. Step 6: Final answer
    x = 221,562.54

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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.