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Finding the Fourth Proportional to 230,543.55, 318,101.99 and 139,947.21

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Solution

The fourth proportional to 230,543.55, 318,101.99 and 139,947.21 is: 193,097.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,543.55 : 318,101.99 = 139,947.21 : x
  2. Step 2: Convert to fraction form
    230,543.55/318,101.99 = 139,947.21/x
  3. Step 3: Cross multiply
    230,543.55x = 318,101.99 × 139,947.21
  4. Step 4: Simplify right side
    230,543.55x = 44,517,485,296.21
  5. Step 5: Solve for x
    x = 44,517,485,296.21/230,543.55
  6. Step 6: Final answer
    x = 193,097.94

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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.