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Finding the Fourth Proportional to 316,988.21, 437,488.52 and 196,168.40

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Solution

The fourth proportional to 316,988.21, 437,488.52 and 196,168.40 is: 270,740.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,988.21 : 437,488.52 = 196,168.40 : x
  2. Step 2: Convert to fraction form
    316,988.21/437,488.52 = 196,168.40/x
  3. Step 3: Cross multiply
    316,988.21x = 437,488.52 × 196,168.40
  4. Step 4: Simplify right side
    316,988.21x = 85,821,419,818.48
  5. Step 5: Solve for x
    x = 85,821,419,818.48/316,988.21
  6. Step 6: Final answer
    x = 270,740.10

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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.