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Finding the Fourth Proportional to 307,042.40, 460,563.60 and 217,812.80

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Solution

The fourth proportional to 307,042.40, 460,563.60 and 217,812.80 is: 326,719.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,042.40 : 460,563.60 = 217,812.80 : x
  2. Step 2: Convert to fraction form
    307,042.40/460,563.60 = 217,812.80/x
  3. Step 3: Cross multiply
    307,042.40x = 460,563.60 × 217,812.80
  4. Step 4: Simplify right side
    307,042.40x = 100,316,647,294.08
  5. Step 5: Solve for x
    x = 100,316,647,294.08/307,042.40
  6. Step 6: Final answer
    x = 326,719.20

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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.