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Finding the Fourth Proportional to 355,033.76, 489,948.40 and 193,888.81

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Solution

The fourth proportional to 355,033.76, 489,948.40 and 193,888.81 is: 267,567.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,033.76 : 489,948.40 = 193,888.81 : x
  2. Step 2: Convert to fraction form
    355,033.76/489,948.40 = 193,888.81/x
  3. Step 3: Cross multiply
    355,033.76x = 489,948.40 × 193,888.81
  4. Step 4: Simplify right side
    355,033.76x = 94,995,513,379.56
  5. Step 5: Solve for x
    x = 94,995,513,379.56/355,033.76
  6. Step 6: Final answer
    x = 267,567.55

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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.