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Finding the Fourth Proportional to 340,553.92, 469,722.72 and 289,212.16

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Solution

The fourth proportional to 340,553.92, 469,722.72 and 289,212.16 is: 398,907.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,553.92 : 469,722.72 = 289,212.16 : x
  2. Step 2: Convert to fraction form
    340,553.92/469,722.72 = 289,212.16/x
  3. Step 3: Cross multiply
    340,553.92x = 469,722.72 × 289,212.16
  4. Step 4: Simplify right side
    340,553.92x = 135,849,522,452.28
  5. Step 5: Solve for x
    x = 135,849,522,452.28/340,553.92
  6. Step 6: Final answer
    x = 398,907.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.