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Finding the Fourth Proportional to 330,113.70, 495,170.55 and 307,806.30

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Solution

The fourth proportional to 330,113.70, 495,170.55 and 307,806.30 is: 461,709.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,113.70 : 495,170.55 = 307,806.30 : x
  2. Step 2: Convert to fraction form
    330,113.70/495,170.55 = 307,806.30/x
  3. Step 3: Cross multiply
    330,113.70x = 495,170.55 × 307,806.30
  4. Step 4: Simplify right side
    330,113.70x = 152,416,614,864.47
  5. Step 5: Solve for x
    x = 152,416,614,864.47/330,113.70
  6. Step 6: Final answer
    x = 461,709.45

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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.