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Finding the Fourth Proportional to 281,447.54, 388,456.25 and 258,750.59

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Solution

The fourth proportional to 281,447.54, 388,456.25 and 258,750.59 is: 357,129.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,447.54 : 388,456.25 = 258,750.59 : x
  2. Step 2: Convert to fraction form
    281,447.54/388,456.25 = 258,750.59/x
  3. Step 3: Cross multiply
    281,447.54x = 388,456.25 × 258,750.59
  4. Step 4: Simplify right side
    281,447.54x = 100,513,280,640.65
  5. Step 5: Solve for x
    x = 100,513,280,640.65/281,447.54
  6. Step 6: Final answer
    x = 357,129.72

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1.5x scale

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.