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Finding the Fourth Proportional to 402,179.45, 603,268.63 and 102,660.01

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Solution

The fourth proportional to 402,179.45, 603,268.63 and 102,660.01 is: 153,989.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,179.45 : 603,268.63 = 102,660.01 : x
  2. Step 2: Convert to fraction form
    402,179.45/603,268.63 = 102,660.01/x
  3. Step 3: Cross multiply
    402,179.45x = 603,268.63 × 102,660.01
  4. Step 4: Simplify right side
    402,179.45x = 61,931,561,823.66
  5. Step 5: Solve for x
    x = 61,931,561,823.66/402,179.45
  6. Step 6: Final answer
    x = 153,989.87

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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.