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Finding the Fourth Proportional to 321,000.70, 481,558.65 and 134,031.10

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Solution

The fourth proportional to 321,000.70, 481,558.65 and 134,031.10 is: 201,070.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,000.70 : 481,558.65 = 134,031.10 : x
  2. Step 2: Convert to fraction form
    321,000.70/481,558.65 = 134,031.10/x
  3. Step 3: Cross multiply
    321,000.70x = 481,558.65 × 134,031.10
  4. Step 4: Simplify right side
    321,000.70x = 64,543,835,574.02
  5. Step 5: Solve for x
    x = 64,543,835,574.02/321,000.70
  6. Step 6: Final answer
    x = 201,070.70

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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.