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Finding the Fourth Proportional to 202,323.40, 303,485.10 and 139,337.80

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Solution

The fourth proportional to 202,323.40, 303,485.10 and 139,337.80 is: 209,006.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,323.40 : 303,485.10 = 139,337.80 : x
  2. Step 2: Convert to fraction form
    202,323.40/303,485.10 = 139,337.80/x
  3. Step 3: Cross multiply
    202,323.40x = 303,485.10 × 139,337.80
  4. Step 4: Simplify right side
    202,323.40x = 42,286,946,166.78
  5. Step 5: Solve for x
    x = 42,286,946,166.78/202,323.40
  6. Step 6: Final answer
    x = 209,006.70

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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.