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Finding the Fourth Proportional to 427,379.99, 589,900.98 and 266,139.77

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Solution

The fourth proportional to 427,379.99, 589,900.98 and 266,139.77 is: 367,345.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,379.99 : 589,900.98 = 266,139.77 : x
  2. Step 2: Convert to fraction form
    427,379.99/589,900.98 = 266,139.77/x
  3. Step 3: Cross multiply
    427,379.99x = 589,900.98 × 266,139.77
  4. Step 4: Simplify right side
    427,379.99x = 156,996,108,190.47
  5. Step 5: Solve for x
    x = 156,996,108,190.47/427,379.99
  6. Step 6: Final answer
    x = 367,345.49

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.