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Finding the Fourth Proportional to 478,884, 718,329.60 and 212,572.92

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Solution

The fourth proportional to 478,884, 718,329.60 and 212,572.92 is: 318,860.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,884 : 718,329.60 = 212,572.92 : x
  2. Step 2: Convert to fraction form
    478,884/718,329.60 = 212,572.92/x
  3. Step 3: Cross multiply
    478,884x = 718,329.60 × 212,572.92
  4. Step 4: Simplify right side
    478,884x = 152,697,420,594.43
  5. Step 5: Solve for x
    x = 152,697,420,594.43/478,884
  6. Step 6: Final answer
    x = 318,860.98

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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.