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Finding the Fourth Proportional to 312,446.67, 465,926.45 and 309,604.93

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Solution

The fourth proportional to 312,446.67, 465,926.45 and 309,604.93 is: 461,688.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,446.67 : 465,926.45 = 309,604.93 : x
  2. Step 2: Convert to fraction form
    312,446.67/465,926.45 = 309,604.93/x
  3. Step 3: Cross multiply
    312,446.67x = 465,926.45 × 309,604.93
  4. Step 4: Simplify right side
    312,446.67x = 144,253,128,457.69
  5. Step 5: Solve for x
    x = 144,253,128,457.69/312,446.67
  6. Step 6: Final answer
    x = 461,688.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.