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Finding the Fourth Proportional to 330,155.80, 495,087.90 and 130,409.80

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Solution

The fourth proportional to 330,155.80, 495,087.90 and 130,409.80 is: 195,557.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,155.80 : 495,087.90 = 130,409.80 : x
  2. Step 2: Convert to fraction form
    330,155.80/495,087.90 = 130,409.80/x
  3. Step 3: Cross multiply
    330,155.80x = 495,087.90 × 130,409.80
  4. Step 4: Simplify right side
    330,155.80x = 64,564,314,021.42
  5. Step 5: Solve for x
    x = 64,564,314,021.42/330,155.80
  6. Step 6: Final answer
    x = 195,557.11

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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.