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Finding the Fourth Proportional to 372,489.72, 558,734.58 and 306,559.32

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Solution

The fourth proportional to 372,489.72, 558,734.58 and 306,559.32 is: 459,838.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,489.72 : 558,734.58 = 306,559.32 : x
  2. Step 2: Convert to fraction form
    372,489.72/558,734.58 = 306,559.32/x
  3. Step 3: Cross multiply
    372,489.72x = 558,734.58 × 306,559.32
  4. Step 4: Simplify right side
    372,489.72x = 171,285,292,905.29
  5. Step 5: Solve for x
    x = 171,285,292,905.29/372,489.72
  6. Step 6: Final answer
    x = 459,838.98

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Similar ratio
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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.