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Finding the Fourth Proportional to 478,884.25, 718,329.98 and 212,573.17

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Solution

The fourth proportional to 478,884.25, 718,329.98 and 212,573.17 is: 318,861.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,884.25 : 718,329.98 = 212,573.17 : x
  2. Step 2: Convert to fraction form
    478,884.25/718,329.98 = 212,573.17/x
  3. Step 3: Cross multiply
    478,884.25x = 718,329.98 × 212,573.17
  4. Step 4: Simplify right side
    478,884.25x = 152,697,679,891.77
  5. Step 5: Solve for x
    x = 152,697,679,891.77/478,884.25
  6. Step 6: Final answer
    x = 318,861.35

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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.