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Finding the Fourth Proportional to 313,381.80, 470,072.70 and 103,026.60

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Solution

The fourth proportional to 313,381.80, 470,072.70 and 103,026.60 is: 154,539.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,381.80 : 470,072.70 = 103,026.60 : x
  2. Step 2: Convert to fraction form
    313,381.80/470,072.70 = 103,026.60/x
  3. Step 3: Cross multiply
    313,381.80x = 470,072.70 × 103,026.60
  4. Step 4: Simplify right side
    313,381.80x = 48,429,992,033.82
  5. Step 5: Solve for x
    x = 48,429,992,033.82/313,381.80
  6. Step 6: Final answer
    x = 154,539.90

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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.