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Finding the Fourth Proportional to 319,460.45, 479,139.84 and 106,210.67

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Solution

The fourth proportional to 319,460.45, 479,139.84 and 106,210.67 is: 159,299.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,460.45 : 479,139.84 = 106,210.67 : x
  2. Step 2: Convert to fraction form
    319,460.45/479,139.84 = 106,210.67/x
  3. Step 3: Cross multiply
    319,460.45x = 479,139.84 × 106,210.67
  4. Step 4: Simplify right side
    319,460.45x = 50,889,761,034.39
  5. Step 5: Solve for x
    x = 50,889,761,034.39/319,460.45
  6. Step 6: Final answer
    x = 159,299.10

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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.