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Finding the Fourth Proportional to 312,370.30, 468,485.25 and 143,728.84

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Solution

The fourth proportional to 312,370.30, 468,485.25 and 143,728.84 is: 215,560.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,370.30 : 468,485.25 = 143,728.84 : x
  2. Step 2: Convert to fraction form
    312,370.30/468,485.25 = 143,728.84/x
  3. Step 3: Cross multiply
    312,370.30x = 468,485.25 × 143,728.84
  4. Step 4: Simplify right side
    312,370.30x = 67,334,841,539.61
  5. Step 5: Solve for x
    x = 67,334,841,539.61/312,370.30
  6. Step 6: Final answer
    x = 215,560.96

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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.