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Finding the Fourth Proportional to 305,794.85, 458,692.28 and 258,555.65

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Solution

The fourth proportional to 305,794.85, 458,692.28 and 258,555.65 is: 387,833.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,794.85 : 458,692.28 = 258,555.65 : x
  2. Step 2: Convert to fraction form
    305,794.85/458,692.28 = 258,555.65/x
  3. Step 3: Cross multiply
    305,794.85x = 458,692.28 × 258,555.65
  4. Step 4: Simplify right side
    305,794.85x = 118,597,479,312.60
  5. Step 5: Solve for x
    x = 118,597,479,312.60/305,794.85
  6. Step 6: Final answer
    x = 387,833.48

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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.