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Finding the Fourth Proportional to 550,217.12, 759,289.97 and 308,498.95

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Solution

The fourth proportional to 550,217.12, 759,289.97 and 308,498.95 is: 425,723.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,217.12 : 759,289.97 = 308,498.95 : x
  2. Step 2: Convert to fraction form
    550,217.12/759,289.97 = 308,498.95/x
  3. Step 3: Cross multiply
    550,217.12x = 759,289.97 × 308,498.95
  4. Step 4: Simplify right side
    550,217.12x = 234,240,157,363.55
  5. Step 5: Solve for x
    x = 234,240,157,363.55/550,217.12
  6. Step 6: Final answer
    x = 425,723.13

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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.