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Finding the Fourth Proportional to 305,560.80, 458,456.40 and 147,928.80

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Solution

The fourth proportional to 305,560.80, 458,456.40 and 147,928.80 is: 221,948.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,560.80 : 458,456.40 = 147,928.80 : x
  2. Step 2: Convert to fraction form
    305,560.80/458,456.40 = 147,928.80/x
  3. Step 3: Cross multiply
    305,560.80x = 458,456.40 × 147,928.80
  4. Step 4: Simplify right side
    305,560.80x = 67,818,905,104.32
  5. Step 5: Solve for x
    x = 67,818,905,104.32/305,560.80
  6. Step 6: Final answer
    x = 221,948.97

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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.