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Finding the Fourth Proportional to 432,870.60, 649,305.90 and 273,438.30

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Solution

The fourth proportional to 432,870.60, 649,305.90 and 273,438.30 is: 410,157.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    432,870.60 : 649,305.90 = 273,438.30 : x
  2. Step 2: Convert to fraction form
    432,870.60/649,305.90 = 273,438.30/x
  3. Step 3: Cross multiply
    432,870.60x = 649,305.90 × 273,438.30
  4. Step 4: Simplify right side
    432,870.60x = 177,545,101,475.97
  5. Step 5: Solve for x
    x = 177,545,101,475.97/432,870.60
  6. Step 6: Final answer
    x = 410,157.45

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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.