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Finding the Fourth Proportional to 367,979.60, 551,969.40 and 157,638.80

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Solution

The fourth proportional to 367,979.60, 551,969.40 and 157,638.80 is: 236,458.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    367,979.60 : 551,969.40 = 157,638.80 : x
  2. Step 2: Convert to fraction form
    367,979.60/551,969.40 = 157,638.80/x
  3. Step 3: Cross multiply
    367,979.60x = 551,969.40 × 157,638.80
  4. Step 4: Simplify right side
    367,979.60x = 87,011,793,852.72
  5. Step 5: Solve for x
    x = 87,011,793,852.72/367,979.60
  6. Step 6: Final answer
    x = 236,458.20

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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.