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Finding the Fourth Proportional to 659,855.84, 989,800.93 and 210,576.11

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Solution

The fourth proportional to 659,855.84, 989,800.93 and 210,576.11 is: 315,869.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,855.84 : 989,800.93 = 210,576.11 : x
  2. Step 2: Convert to fraction form
    659,855.84/989,800.93 = 210,576.11/x
  3. Step 3: Cross multiply
    659,855.84x = 989,800.93 × 210,576.11
  4. Step 4: Simplify right side
    659,855.84x = 208,428,424,828.00
  5. Step 5: Solve for x
    x = 208,428,424,828.00/659,855.84
  6. Step 6: Final answer
    x = 315,869.64

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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.