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Finding the Fourth Proportional to 356,835.45, 535,254.11 and 120,344.25

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Solution

The fourth proportional to 356,835.45, 535,254.11 and 120,344.25 is: 180,516.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,835.45 : 535,254.11 = 120,344.25 : x
  2. Step 2: Convert to fraction form
    356,835.45/535,254.11 = 120,344.25/x
  3. Step 3: Cross multiply
    356,835.45x = 535,254.11 × 120,344.25
  4. Step 4: Simplify right side
    356,835.45x = 64,414,756,509.79
  5. Step 5: Solve for x
    x = 64,414,756,509.79/356,835.45
  6. Step 6: Final answer
    x = 180,516.69

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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.