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Finding the Fourth Proportional to 218,224.80, 327,644.40 and 135,280.80

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Solution

The fourth proportional to 218,224.80, 327,644.40 and 135,280.80 is: 203,111.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,224.80 : 327,644.40 = 135,280.80 : x
  2. Step 2: Convert to fraction form
    218,224.80/327,644.40 = 135,280.80/x
  3. Step 3: Cross multiply
    218,224.80x = 327,644.40 × 135,280.80
  4. Step 4: Simplify right side
    218,224.80x = 44,323,996,547.52
  5. Step 5: Solve for x
    x = 44,323,996,547.52/218,224.80
  6. Step 6: Final answer
    x = 203,111.64

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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.