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Finding the Fourth Proportional to 202,312.70, 303,469.05 and 139,327.10

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Solution

The fourth proportional to 202,312.70, 303,469.05 and 139,327.10 is: 208,990.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,312.70 : 303,469.05 = 139,327.10 : x
  2. Step 2: Convert to fraction form
    202,312.70/303,469.05 = 139,327.10/x
  3. Step 3: Cross multiply
    202,312.70x = 303,469.05 × 139,327.10
  4. Step 4: Simplify right side
    202,312.70x = 42,281,462,676.26
  5. Step 5: Solve for x
    x = 42,281,462,676.26/202,312.70
  6. Step 6: Final answer
    x = 208,990.65

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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.