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Finding the Fourth Proportional to 478,507.06, 717,722.89 and 208,628.83

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Solution

The fourth proportional to 478,507.06, 717,722.89 and 208,628.83 is: 312,926.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,507.06 : 717,722.89 = 208,628.83 : x
  2. Step 2: Convert to fraction form
    478,507.06/717,722.89 = 208,628.83/x
  3. Step 3: Cross multiply
    478,507.06x = 717,722.89 × 208,628.83
  4. Step 4: Simplify right side
    478,507.06x = 149,737,686,804.92
  5. Step 5: Solve for x
    x = 149,737,686,804.92/478,507.06
  6. Step 6: Final answer
    x = 312,926.81

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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.