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Finding the Fourth Proportional to 354,918.06, 489,798.52 and 193,785.36

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Solution

The fourth proportional to 354,918.06, 489,798.52 and 193,785.36 is: 267,430.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,918.06 : 489,798.52 = 193,785.36 : x
  2. Step 2: Convert to fraction form
    354,918.06/489,798.52 = 193,785.36/x
  3. Step 3: Cross multiply
    354,918.06x = 489,798.52 × 193,785.36
  4. Step 4: Simplify right side
    354,918.06x = 94,915,782,525.67
  5. Step 5: Solve for x
    x = 94,915,782,525.67/354,918.06
  6. Step 6: Final answer
    x = 267,430.13

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.