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Finding the Fourth Proportional to 447,077.80, 670,616.70 and 210,881.80

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Solution

The fourth proportional to 447,077.80, 670,616.70 and 210,881.80 is: 316,322.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,077.80 : 670,616.70 = 210,881.80 : x
  2. Step 2: Convert to fraction form
    447,077.80/670,616.70 = 210,881.80/x
  3. Step 3: Cross multiply
    447,077.80x = 670,616.70 × 210,881.80
  4. Step 4: Simplify right side
    447,077.80x = 141,420,856,806.06
  5. Step 5: Solve for x
    x = 141,420,856,806.06/447,077.80
  6. Step 6: Final answer
    x = 316,322.70

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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.