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Finding the Fourth Proportional to 281,745.82, 388,810.35 and 152,684.57

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Solution

The fourth proportional to 281,745.82, 388,810.35 and 152,684.57 is: 210,705.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,745.82 : 388,810.35 = 152,684.57 : x
  2. Step 2: Convert to fraction form
    281,745.82/388,810.35 = 152,684.57/x
  3. Step 3: Cross multiply
    281,745.82x = 388,810.35 × 152,684.57
  4. Step 4: Simplify right side
    281,745.82x = 59,365,341,101.30
  5. Step 5: Solve for x
    x = 59,365,341,101.30/281,745.82
  6. Step 6: Final answer
    x = 210,705.31

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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.