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Finding the Fourth Proportional to 444,035.60, 666,139.80 and 128,502.80

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Solution

The fourth proportional to 444,035.60, 666,139.80 and 128,502.80 is: 192,779.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    444,035.60 : 666,139.80 = 128,502.80 : x
  2. Step 2: Convert to fraction form
    444,035.60/666,139.80 = 128,502.80/x
  3. Step 3: Cross multiply
    444,035.60x = 666,139.80 × 128,502.80
  4. Step 4: Simplify right side
    444,035.60x = 85,600,829,491.44
  5. Step 5: Solve for x
    x = 85,600,829,491.44/444,035.60
  6. Step 6: Final answer
    x = 192,779.20

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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.