Home / 313,926.80-470,890.20-207,638.60

Finding the Fourth Proportional to 313,926.80, 470,890.20 and 207,638.60

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Solution

The fourth proportional to 313,926.80, 470,890.20 and 207,638.60 is: 311,457.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,926.80 : 470,890.20 = 207,638.60 : x
  2. Step 2: Convert to fraction form
    313,926.80/470,890.20 = 207,638.60/x
  3. Step 3: Cross multiply
    313,926.80x = 470,890.20 × 207,638.60
  4. Step 4: Simplify right side
    313,926.80x = 97,774,981,881.72
  5. Step 5: Solve for x
    x = 97,774,981,881.72/313,926.80
  6. Step 6: Final answer
    x = 311,457.90

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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.