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Finding the Fourth Proportional to 478,756.36, 718,220.46 and 198,295.24

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Solution

The fourth proportional to 478,756.36, 718,220.46 and 198,295.24 is: 297,478.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,756.36 : 718,220.46 = 198,295.24 : x
  2. Step 2: Convert to fraction form
    478,756.36/718,220.46 = 198,295.24/x
  3. Step 3: Cross multiply
    478,756.36x = 718,220.46 × 198,295.24
  4. Step 4: Simplify right side
    478,756.36x = 142,419,698,488.61
  5. Step 5: Solve for x
    x = 142,419,698,488.61/478,756.36
  6. Step 6: Final answer
    x = 297,478.45

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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.