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Finding the Fourth Proportional to 315,639.32, 435,604.50 and 179,673.32

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Solution

The fourth proportional to 315,639.32, 435,604.50 and 179,673.32 is: 247,961.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,639.32 : 435,604.50 = 179,673.32 : x
  2. Step 2: Convert to fraction form
    315,639.32/435,604.50 = 179,673.32/x
  3. Step 3: Cross multiply
    315,639.32x = 435,604.50 × 179,673.32
  4. Step 4: Simplify right side
    315,639.32x = 78,266,507,810.95
  5. Step 5: Solve for x
    x = 78,266,507,810.95/315,639.32
  6. Step 6: Final answer
    x = 247,961.85

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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.