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Finding the Fourth Proportional to 367,635.40, 551,453.10 and 130,985.80

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Solution

The fourth proportional to 367,635.40, 551,453.10 and 130,985.80 is: 196,478.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    367,635.40 : 551,453.10 = 130,985.80 : x
  2. Step 2: Convert to fraction form
    367,635.40/551,453.10 = 130,985.80/x
  3. Step 3: Cross multiply
    367,635.40x = 551,453.10 × 130,985.80
  4. Step 4: Simplify right side
    367,635.40x = 72,232,525,465.98
  5. Step 5: Solve for x
    x = 72,232,525,465.98/367,635.40
  6. Step 6: Final answer
    x = 196,478.70

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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.