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Finding the Fourth Proportional to 355,406.85, 532,851.08 and 144,936.45

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Solution

The fourth proportional to 355,406.85, 532,851.08 and 144,936.45 is: 217,298.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,406.85 : 532,851.08 = 144,936.45 : x
  2. Step 2: Convert to fraction form
    355,406.85/532,851.08 = 144,936.45/x
  3. Step 3: Cross multiply
    355,406.85x = 532,851.08 × 144,936.45
  4. Step 4: Simplify right side
    355,406.85x = 77,229,543,189.18
  5. Step 5: Solve for x
    x = 77,229,543,189.18/355,406.85
  6. Step 6: Final answer
    x = 217,298.97

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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.