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Finding the Fourth Proportional to 402,401.10, 603,601.65 and 121,932.30

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Solution

The fourth proportional to 402,401.10, 603,601.65 and 121,932.30 is: 182,898.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,401.10 : 603,601.65 = 121,932.30 : x
  2. Step 2: Convert to fraction form
    402,401.10/603,601.65 = 121,932.30/x
  3. Step 3: Cross multiply
    402,401.10x = 603,601.65 × 121,932.30
  4. Step 4: Simplify right side
    402,401.10x = 73,598,537,468.30
  5. Step 5: Solve for x
    x = 73,598,537,468.30/402,401.10
  6. Step 6: Final answer
    x = 182,898.45

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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.