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Finding the Fourth Proportional to 328,205.80, 492,264.96 and 91,528.66

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Solution

The fourth proportional to 328,205.80, 492,264.96 and 91,528.66 is: 137,280.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,205.80 : 492,264.96 = 91,528.66 : x
  2. Step 2: Convert to fraction form
    328,205.80/492,264.96 = 91,528.66/x
  3. Step 3: Cross multiply
    328,205.80x = 492,264.96 × 91,528.66
  4. Step 4: Simplify right side
    328,205.80x = 45,056,352,153.75
  5. Step 5: Solve for x
    x = 45,056,352,153.75/328,205.80
  6. Step 6: Final answer
    x = 137,280.79

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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.