Home / 405,985.57-608,889.50-136,151.69

Finding the Fourth Proportional to 405,985.57, 608,889.50 and 136,151.69

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Solution

The fourth proportional to 405,985.57, 608,889.50 and 136,151.69 is: 204,197.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,985.57 : 608,889.50 = 136,151.69 : x
  2. Step 2: Convert to fraction form
    405,985.57/608,889.50 = 136,151.69/x
  3. Step 3: Cross multiply
    405,985.57x = 608,889.50 × 136,151.69
  4. Step 4: Simplify right side
    405,985.57x = 82,901,331,999.47
  5. Step 5: Solve for x
    x = 82,901,331,999.47/405,985.57
  6. Step 6: Final answer
    x = 204,197.73

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1.5x scale

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.