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Finding the Fourth Proportional to 243,556.80, 365,335.20 and 218,187.60

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Solution

The fourth proportional to 243,556.80, 365,335.20 and 218,187.60 is: 327,281.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,556.80 : 365,335.20 = 218,187.60 : x
  2. Step 2: Convert to fraction form
    243,556.80/365,335.20 = 218,187.60/x
  3. Step 3: Cross multiply
    243,556.80x = 365,335.20 × 218,187.60
  4. Step 4: Simplify right side
    243,556.80x = 79,711,610,483.52
  5. Step 5: Solve for x
    x = 79,711,610,483.52/243,556.80
  6. Step 6: Final answer
    x = 327,281.40

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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.