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Finding the Fourth Proportional to 445,640.30, 668,878.05 and 235,429.10

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Solution

The fourth proportional to 445,640.30, 668,878.05 and 235,429.10 is: 353,364.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,640.30 : 668,878.05 = 235,429.10 : x
  2. Step 2: Convert to fraction form
    445,640.30/668,878.05 = 235,429.10/x
  3. Step 3: Cross multiply
    445,640.30x = 668,878.05 × 235,429.10
  4. Step 4: Simplify right side
    445,640.30x = 157,473,357,321.26
  5. Step 5: Solve for x
    x = 157,473,357,321.26/445,640.30
  6. Step 6: Final answer
    x = 353,364.27

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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.