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Finding the Fourth Proportional to 488,149.80, 732,880.80 and 311,440.20

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Solution

The fourth proportional to 488,149.80, 732,880.80 and 311,440.20 is: 467,578.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,149.80 : 732,880.80 = 311,440.20 : x
  2. Step 2: Convert to fraction form
    488,149.80/732,880.80 = 311,440.20/x
  3. Step 3: Cross multiply
    488,149.80x = 732,880.80 × 311,440.20
  4. Step 4: Simplify right side
    488,149.80x = 228,248,542,928.16
  5. Step 5: Solve for x
    x = 228,248,542,928.16/488,149.80
  6. Step 6: Final answer
    x = 467,578.89

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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.