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Finding the Fourth Proportional to 424,121.40, 636,182.10 and 235,164.60

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Solution

The fourth proportional to 424,121.40, 636,182.10 and 235,164.60 is: 352,746.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,121.40 : 636,182.10 = 235,164.60 : x
  2. Step 2: Convert to fraction form
    424,121.40/636,182.10 = 235,164.60/x
  3. Step 3: Cross multiply
    424,121.40x = 636,182.10 × 235,164.60
  4. Step 4: Simplify right side
    424,121.40x = 149,607,509,073.66
  5. Step 5: Solve for x
    x = 149,607,509,073.66/424,121.40
  6. Step 6: Final answer
    x = 352,746.90

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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.