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Finding the Fourth Proportional to 288,880.79, 398,654.12 and 161,556.89

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Solution

The fourth proportional to 288,880.79, 398,654.12 and 161,556.89 is: 222,947.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,880.79 : 398,654.12 = 161,556.89 : x
  2. Step 2: Convert to fraction form
    288,880.79/398,654.12 = 161,556.89/x
  3. Step 3: Cross multiply
    288,880.79x = 398,654.12 × 161,556.89
  4. Step 4: Simplify right side
    288,880.79x = 64,405,318,223.51
  5. Step 5: Solve for x
    x = 64,405,318,223.51/288,880.79
  6. Step 6: Final answer
    x = 222,947.74

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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.