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Finding the Fourth Proportional to 483,721.95, 667,350.18 and 311,626.92

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Solution

The fourth proportional to 483,721.95, 667,350.18 and 311,626.92 is: 429,925.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,721.95 : 667,350.18 = 311,626.92 : x
  2. Step 2: Convert to fraction form
    483,721.95/667,350.18 = 311,626.92/x
  3. Step 3: Cross multiply
    483,721.95x = 667,350.18 × 311,626.92
  4. Step 4: Simplify right side
    483,721.95x = 207,964,281,154.85
  5. Step 5: Solve for x
    x = 207,964,281,154.85/483,721.95
  6. Step 6: Final answer
    x = 429,925.25

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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.