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Finding the Fourth Proportional to 490,870.12, 736,122.86 and 170,939.84

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Solution

The fourth proportional to 490,870.12, 736,122.86 and 170,939.84 is: 256,346.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,870.12 : 736,122.86 = 170,939.84 : x
  2. Step 2: Convert to fraction form
    490,870.12/736,122.86 = 170,939.84/x
  3. Step 3: Cross multiply
    490,870.12x = 736,122.86 × 170,939.84
  4. Step 4: Simplify right side
    490,870.12x = 125,832,723,908.74
  5. Step 5: Solve for x
    x = 125,832,723,908.74/490,870.12
  6. Step 6: Final answer
    x = 256,346.27

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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.