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Finding the Fourth Proportional to 313,488.80, 470,233.20 and 189,072.80

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Solution

The fourth proportional to 313,488.80, 470,233.20 and 189,072.80 is: 283,609.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,488.80 : 470,233.20 = 189,072.80 : x
  2. Step 2: Convert to fraction form
    313,488.80/470,233.20 = 189,072.80/x
  3. Step 3: Cross multiply
    313,488.80x = 470,233.20 × 189,072.80
  4. Step 4: Simplify right side
    313,488.80x = 88,908,307,776.96
  5. Step 5: Solve for x
    x = 88,908,307,776.96/313,488.80
  6. Step 6: Final answer
    x = 283,609.20

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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.