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Finding the Fourth Proportional to 478,505.56, 717,720.65 and 208,627.33

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Solution

The fourth proportional to 478,505.56, 717,720.65 and 208,627.33 is: 312,924.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,505.56 : 717,720.65 = 208,627.33 : x
  2. Step 2: Convert to fraction form
    478,505.56/717,720.65 = 208,627.33/x
  3. Step 3: Cross multiply
    478,505.56x = 717,720.65 × 208,627.33
  4. Step 4: Simplify right side
    478,505.56x = 149,736,138,263.63
  5. Step 5: Solve for x
    x = 149,736,138,263.63/478,505.56
  6. Step 6: Final answer
    x = 312,924.56

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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.