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Finding the Fourth Proportional to 399,500.76, 550,598.14 and 302,472.15

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Solution

The fourth proportional to 399,500.76, 550,598.14 and 302,472.15 is: 416,871.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,500.76 : 550,598.14 = 302,472.15 : x
  2. Step 2: Convert to fraction form
    399,500.76/550,598.14 = 302,472.15/x
  3. Step 3: Cross multiply
    399,500.76x = 550,598.14 × 302,472.15
  4. Step 4: Simplify right side
    399,500.76x = 166,540,603,191.80
  5. Step 5: Solve for x
    x = 166,540,603,191.80/399,500.76
  6. Step 6: Final answer
    x = 416,871.81

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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.