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Finding the Fourth Proportional to 423,639.01, 635,376.45 and 120,030.56

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Solution

The fourth proportional to 423,639.01, 635,376.45 and 120,030.56 is: 180,022.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,639.01 : 635,376.45 = 120,030.56 : x
  2. Step 2: Convert to fraction form
    423,639.01/635,376.45 = 120,030.56/x
  3. Step 3: Cross multiply
    423,639.01x = 635,376.45 × 120,030.56
  4. Step 4: Simplify right side
    423,639.01x = 76,264,590,760.21
  5. Step 5: Solve for x
    x = 76,264,590,760.21/423,639.01
  6. Step 6: Final answer
    x = 180,022.59

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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.