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Finding the Fourth Proportional to 330,944.69, 495,980.92 and 131,156.16

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Solution

The fourth proportional to 330,944.69, 495,980.92 and 131,156.16 is: 196,561.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,944.69 : 495,980.92 = 131,156.16 : x
  2. Step 2: Convert to fraction form
    330,944.69/495,980.92 = 131,156.16/x
  3. Step 3: Cross multiply
    330,944.69x = 495,980.92 × 131,156.16
  4. Step 4: Simplify right side
    330,944.69x = 65,050,953,994.38
  5. Step 5: Solve for x
    x = 65,050,953,994.38/330,944.69
  6. Step 6: Final answer
    x = 196,561.41

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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.