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Finding the Fourth Proportional to 663,754.50, 995,547.00 and 214,428.67

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Solution

The fourth proportional to 663,754.50, 995,547.00 and 214,428.67 is: 321,615.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,754.50 : 995,547.00 = 214,428.67 : x
  2. Step 2: Convert to fraction form
    663,754.50/995,547.00 = 214,428.67/x
  3. Step 3: Cross multiply
    663,754.50x = 995,547.00 × 214,428.67
  4. Step 4: Simplify right side
    663,754.50x = 213,473,817,447.73
  5. Step 5: Solve for x
    x = 213,473,817,447.73/663,754.50
  6. Step 6: Final answer
    x = 321,615.62

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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.