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Finding the Fourth Proportional to 478,150.59, 659,506.64 and 308,220.69

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Solution

The fourth proportional to 478,150.59, 659,506.64 and 308,220.69 is: 425,124.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,150.59 : 659,506.64 = 308,220.69 : x
  2. Step 2: Convert to fraction form
    478,150.59/659,506.64 = 308,220.69/x
  3. Step 3: Cross multiply
    478,150.59x = 659,506.64 × 308,220.69
  4. Step 4: Simplify right side
    478,150.59x = 203,273,589,221.06
  5. Step 5: Solve for x
    x = 203,273,589,221.06/478,150.59
  6. Step 6: Final answer
    x = 425,124.63

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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.