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Finding the Fourth Proportional to 398,192.56, 549,505.74 and 219,344.56

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Solution

The fourth proportional to 398,192.56, 549,505.74 and 219,344.56 is: 302,695.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,192.56 : 549,505.74 = 219,344.56 : x
  2. Step 2: Convert to fraction form
    398,192.56/549,505.74 = 219,344.56/x
  3. Step 3: Cross multiply
    398,192.56x = 549,505.74 × 219,344.56
  4. Step 4: Simplify right side
    398,192.56x = 120,531,094,757.77
  5. Step 5: Solve for x
    x = 120,531,094,757.77/398,192.56
  6. Step 6: Final answer
    x = 302,695.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.